1. Manuals
  2. Brands
  3. GSK Manuals
  4. Control Systems
  5. 988T
  6. User manual

GSK 988T User Manual

Turning cnc system
Hide thumbs Also See for 988T:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
Table of Contents

Advertisement

Quick Links

Download this manual
In this user manual we have tried to describe the matters
concerning the operation of this CNC system to the greatest extent.
However, it is impossible to give particular descriptions for all
unnecessary or unallowable operations due to length limitation and
products application conditions；Therefore, the items not presented
herein should be regarded as "impossible" or "unallowable".
Copyright is reserved to GSK CNC Equipment Co., Ltd. It
is illegal for any organization or individual to publish or reprint this
manual. GSK CNC Equipment Co., Ltd. reserves the right to ascertain
their legal liability.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 988T and is the answer not in the manual?

Questions and answers

Related Manuals for GSK 988T

Summary of Contents for GSK 988T

  • Page 1 “impossible” or “unallowable”. Copyright is reserved to GSK CNC Equipment Co., Ltd. It is illegal for any organization or individual to publish or reprint this manual. GSK CNC Equipment Co., Ltd. reserves the right to ascertain their legal liability.
  • Page 2 GSK988T Turning CNC System User Manual Preface Your Excellency, We are honored by your purchase of this GSK 988T Turning CNC System made by GSK CNC Equipment Co., Ltd. This book is User Manual “Programming and Operation”. To ensure safe and effective running, please read this manual carefully before installation and operation.
  • Page 3 Contents Cautions ■ Delivery and storage ● Packing box over 6 layers in pile is unallowed. ● Never climb the packing box, stand on it or place heavy objects on it. ● Do not move or drag the products by the cables connected to it. ●...
  • Page 4 GSK988T Turning CNC System User Manual ANNOUNCEMENT! This manual describes various possibilities as much as possible. However, operations allowable or unallowable cannot be explained one by one due to so many possibilities that may involve with, so the contents that are not specially stated in this manual shall be regarded as unallowable.
  • Page 5 This manual is subject to change without further notice. This manual is reserved by end user. We are full of heartfelt gratitude to you for supporting us in the use of GSK’s products.
  • Page 6 GSK988T Turning CNC System User Manual...

  • Page 7: Table Of Contents

    Contents Contents Ⅰ PROGRAMMING ..........................1 Chapter I Programming Fundamentals ....................3 1.1 GSK988T Introduction ......................3 1.2 CNC system of machine tools and CNC machine tools ............5 1.3 Programming Fundamentals....................7 1.3.1 Coordinates definition ....................7 1.3.2 Increment system .....................9 1.3.3 Max. travel ......................10 1.3.4 Reference position....................10 1.3.5 Machine coordinate system ..................10 1.3.6 Workpice coordinate system...................
  • Page 8 GSK988T Turning CNC System User Manual 2.12.1 Reference position return G28................50 2.12.2 2 reference position return G30 .............51 2.13 Related Function of Coordinate System .................52 2.13.1 Selecting machine coordinate system position G53 ..........53 2.13.2 Workpiece coordinate system setting G50 ............54 2.13.3 Workpiece coordinate system selection command G54～G59......55 2.13.4 Local coordinate system setting G52..............57 2.13.5 Level selection command G17～G19 ..............59...
  • Page 9 Contents 3.1.2 End of program run M30 ..................139 3.1.3 Program stop M00 ....................139 3.1.4 Optional stop M01....................140 3.1.5 Subprogram call M98 ..................140 3.1.6 Subprogram Call M198 ..................141 3.1.7 Return from Subprogram M99................141 3.1.8 The Following M commands for standard ladder(some functions modified by K parameters) ........................142 3.1.9 M Commands defined by standard PLC ladder ............143 3.2 Spindle Function ......................143...
  • Page 10 3.5.1 Alarm message check window ................240 3.5.2 Alarm record check window.................. 241 3.5.3 Diagnosis window....................242 3.5.4 Oscillograph window..................... 245 3.5.5 GSK-CAN window ....................248 3.6 Graph Window ........................ 249 3.6.1 Setting graph parameter ..................249 3.6.2 Processing graph path..................250 3.6.3 Simulation graph....................
  • Page 11 Contents 4.1 Searching, Creating, Executing and Opening a Program ..........254 4.1.1 Searching a program ....................254 4.1.2 Creating a program....................254 4.1.3 Executing a program.....................255 4.1.4 Opening a program....................256 4.2 Renaming, Outputting, Deleting and Arraying Programs, Saving a Program as .....257 4.2.1 Renaming a program ....................257 4.2.2 Saving a program as.....................258 4.2.3 Deleting a program ....................259 4.2.4 Outputting a program....................259...
  • Page 12 GSK988T Turning CNC System User Manual 7.1.1 Direct input method ....................282 7.1.2 Measuring mode....................283 7.1.3 +input mode......................284 7.1.4 C input method .....................285 7.1.5 Clearing the offset value or the wearing value............286 7.2 Fixed-Point Tool Setting ....................287 7.3 Trial Cut Toolsetting ......................
  • Page 13 11.22 Parameters Related to MPG Feed ................356 11.23 Parameters Related to PLC Axis Control ..............357 11.24 Parameters Related to Basic Function................360 11.25 Parameters Related to GSK-CAN Communication Function ........361 Appendix 1 Alarm List ........................363 1.1 Program Alarms (P/S Alarms) ..................363 1.2 Parameter Alarms ......................372...
  • Page 14 GSK988T Turning CNC System User Manual...

  • Page 15: Ⅰ Programming

    Chapter 1 Programming Fundamentals Ⅰ PROGRAMMING...
  • Page 16 GSK988T Turning CNC System User Manual...

  • Page 17: Chapter I Programming Fundamentals

    GSK988T is exclusive to the slant bed CNC turning machine and turning center with the horizontal and the vertical structures. It uses 400MHz high-performance process to control 5 feed axes(including Cs axis) and 2 spindles, communicates with the servo unit through GSK-CAN serial 0.1μm...
  • Page 18 GSK988T Turning CNC System User Manual Technical specifications Controllable axes Max. controllable axes：5（including Cs axis） Max. link axes：3 PLC controllable axes：5 Feed axis function Least command unit：0.001mm, 0.0001mm Least command range：±99999999× least command unit Rapid traverse speed：max. 60m/min in 0.001mm command unit, max. 24m/min in 0.0001mm command unit Rapid override：F0, 25%, 50%, 100% real-timing tuning Cutting feedrate:...

  • Page 19: Cnc System Of Machine Tools And Cnc Machine Tools

    Chapter Ⅰ Programming Fundamentals PLC ladder on-line edit, real-time monitoring 2-level PLC program, up to 5000 steps, the 1 level program refresh period Many PLC programs（up to 16 programs） ，the current running PLC program can be selected I/O unit Basic I/O：40 input /32 output Operation panel I/O：96 input/96 output Human-computer interface Display in Chinese, English and others...
  • Page 20 GSK988T Turning CNC System User Manual etc. Operational principles of CNC machine tools: according to requirements of machining technology, edit user programs and input them to CNC, then CNC outputs motion control commands to the servo (stepper) motor drive devices, and last the servo (or stepper) motor completes the cutting feed of machine tool by mechanical driving device;...

  • Page 21: Programming Fundamentals

    Chapter Ⅰ Programming Fundamentals Analyse workpiece drawings and confirm machining processing Edit part programs and record into CNC O0001； G00 X3.76 Z0； G01 Z-1.28 F50； … Test part programs and execute trial run M30； ％ Execute toolsetting and set tool offsets and coordinates Run part programs and machine workpiece Check part dimension and modify part...
  • Page 22 GSK988T Turning CNC System User Manual Fig. 1-3 GSK988T uses a rectangular coordinate system composed of X, Z axis. X axis is perpendicular with axes of spindle and Z axis is parallel with axes of spindle; negative directions of them approach to the workpiece and positive ones are away from it.

  • Page 23: Increment System

    Chapter Ⅰ Programming Fundamentals 1.3.2 Increment system Increment system includes least input increment (input) and least command increment (output). Least input increment is the least unit of programming movement distance. Least command increment is the least unit of tool movement on the machine tool. Their unit: mm, inch or degree. Increment systems are separately IS-B and IS-C.

  • Page 24: Max. Travel

    GSK988T Turning CNC System User Manual 1.3.3 Max. travel Max. travel=least command increment X（±）99999999 Table 1-3 (d) max. travel IS-C Increment system Max. travel IS-B Metric machine system ±99999.999mm ±99999.999deg Inch machine system ±9999.9999inch ±9999.9999deg IS-C Metric machine system ±9999.9999mm ±9999.9999deg Inch machine system ±999.99999inch...

  • Page 25: Workpice Coordinate System

    Chapter Ⅰ Programming Fundamentals 1.3.6 Workpice coordinate system The workpiece coordinate system is a rectangular coordinate system based on the part drawing, also called floating coordinate system. The workpiece coordinate system is set by the system in advance, can be changed by moving its coordinate origin point. The established workpiece is valid till it is replaced by a new one.

  • Page 26: Coordinate Value And Dimension

    GSK988T Turning CNC System User Manual Example: Fig.1-8 … G32 W-27 F3； （B→C；thread interpolation） G1 X50 Z-30 F100； G1 X80 Z-50； （D→E；linear interpolation） G3 X100 W-10 R10； （E→F；arc interpolation） … M30； 1.4 Coordinate Value and Dimension 1.4.1 Absolute programming and incremental programming The system has two methods to command the too traverse: absolute value and incremental value command.

  • Page 27: Diameter Programming And Radius Programming

    Chapter Ⅰ Programming Fundamentals The axis word can exist repetitively in the same block and the later value is valid, but when No.3403 Bit 6 (AD2) is set 1, the alarm occurs. U, W in other G command has bee specified to others. For example: in G73, the above conditions 1.4.2 Diameter programming and radius programming Because the workpiece section is the circle in CNC turning controlled program, X dimension can...

  • Page 28: Decimal Programming

    GSK988T Turning CNC System User Manual 1.4.3 Decimal programming Value can be input by decimal programming. Distance, time and speed can be input by decimal programming. The following addresses can use decimal point: X, Y, Z, A, B, C, U, V, W, H, I, J, K, R and F, and other addresses cannot use decimal programming.

  • Page 29: Linear Axis And Rotary Axis

    Chapter Ⅰ Programming Fundamentals ——graduation unit of MPG; ——movement distance in incremental feed. NO.1001 Bit0 (INM) can set MM or INCH input of least command increment in linear axis. 0：mm input( metric machine) 1：inch input（inch machine） 1.4.5 Linear axis and rotary axis NO.1006 Bit0(ROTx) can set each axis to linear axis or rotary axis.

  • Page 30: Program Name

    GSK988T Turning CNC System User Manual N0040 W-30 F200; (Cutting from B point to C point) N0050 X80 W-20 F150; (Cutting from C point to D point) N0060 G0 X100 Z50; (Rapidly retracting to A point) N0070 T0100; (Canceling the tool offset) N0080 M5 S0;...

  • Page 31: Word

    Chapter Ⅰ Programming Fundamentals Countless words: one block can input countless words, and one block can have one or more words or have no words. “EOB” is a end character when one block is completed, “;” is displayed in ，： LCD, there must be have one end character for one block;...
  • Page 32 GSK988T Turning CNC System User Manual Miscellaneous function 0～9999 0～9999 Spindle speed （G96） （G96） 0～20000 m/min 0～2000 feet/min （G97） （G97） 0～20000 r/min 0～20000 r/min Tool offset 0000～9999 0000～9999 Feedrate per minute （ISB system） （ISB system） １～60000 mm/min 0.01～2400 inch/min （ISC system） （ISC system）...
  • Page 33 Chapter Ⅰ Programming Fundamentals depth （ISB system） （ISB system） G71(modify parameter 0.001~99999.999 mm 0.0001~9999.9999 inch manual) （ISC system） （ISC system） (*2) 0.0001~9999.9999 mm 0.00001~999.99999 inch Y relative coordinate Relative （ISB system） （ISB system） value(linear axis) command of -99999.999～99999.999 mm -9999.9999～9999.9999 inch (*1) axis （ISC system）...
  • Page 34 GSK988T Turning CNC System User Manual Line number G70,G71,G 0～99999 0～99999 assignment G70, 72,G73 G71, G72,G73 × × G74,G75 X cycle movement （ *3） 0 ～ 99999999 least 0～99999999 least command in G74, G75 command unit unit Thread cutting Including 3 parameters: Including 3 parameters: parameter in G76 Thread finishing times：1～...
  • Page 35 Chapter Ⅰ Programming Fundamentals Length in long axis G32,G34,G （ISB system） （ISB system） when thread run-out is 0～99999.999 mm 0～9999.9999 inch executed （ISC system） （ISC system） （*2） 0～9999.9999 mm 0～999.99999 inch Conditional judgement THEN Execution after IF conditional judgment is completed successfully GOTO Non-conditional skip WHILE...
  • Page 36 GSK988T Turning CNC System User Manual Skip command, selectively skip the commands following the character Floating point number with number Variable assignment Prior operation expression conditional judgement prompt Variable End of program in the block, following annotation Annotation start in the block. Example: (X20.)W-10.; not execute X20.
  • Page 37 Chapter Ⅰ Programming Fundamentals related ISC=1 0.0001deg -9999.9999～ 9999.9999 deg X,Y,Z,C,A,B,C,U,V, ROTx=1 INI=0 ISC=0 0.001mm -99999.999～ W,H,I,J,K,R Linear axis Metric 99999.999 mm ISC=1 0.0001mm -9999.9999～ 9999.9999 mm INI=1 ISC=0 0.0001inch -9999.9999～ Inch 9999.9999 inch ISC=1 0.00001inch -999.99999～ 999.99999 inch When these word addresses follow data, data precision is least command unit, and excessive data is ignored.
  • Page 38 GSK988T Turning CNC System User Manual Feedrate per minute Parameter Current parameter value value （ ） NO.3402#6 Feedrate per rev Null Current Current value value Pitch Null Current Current value value Delay time Null X absolute coordinate Current Current value value value Y absolute coordinate...
  • Page 39 Chapter Ⅰ Programming Fundamentals Finishing cutting Parameter Parameter Parameter amount in G76 value value value Dwell time Null Null G30 returning to No. n Null Null reference position Macro program Null Alarm Null number, subprogram, subprogram call times Line assignment Null Alarm Null...

  • Page 40: Block Number

    GSK988T Turning CNC System User Manual to starting point Pitch increment Null Current value variable pitch thread cutting X travel lower limit Null Alarm Current value value Z calculation direction Null Null Null in cancelling radius compensation 1.5.4 Block number Format: N △△△△△...

  • Page 41: Program Run

    Chapter Ⅰ Programming Fundamentals Fig.1-11 1.6 Program Run 1.6.1 Sequence of program run Running the current open program must be in Auto mode. GSK988T cannot open two or more programs at the same, and runs only program any time. When the first block is open, the cursor is located in the heading of the first block and can be moved in Edit mode.

  • Page 42: Execution Sequence Of Word

    Refer to the machine manufacture’s user manual for the concrete execution method. The second method is executed when there is M9, M99, M13, M33 or M5 for our GSK ladder. Note: When G28 or G30 and M01 are in the same block, the pause after zero return is done. When there is a single block stop command without M01,the single block stop is executed at the middle point and zero return completion position.

  • Page 43: Chapter Ii G Commands

    Chapter Ⅱ G Commands Chapter II G Commands 2.1 Summary G command consists of command address G and its following command value, used for defining the motion mode of tool relative to the workpiece, defining the coordinates and so on. Refer to G commands as Fig.
  • Page 44 GSK988T Turning CNC System User Manual Linear interpolation Circular interpolation(CW) Circular interpolation(CCW) dwell G7.1 Cylindrical interpolation Non-modal (G107) Programmable data input Programmable data input cancel G12.1 Polar coordinate interpolation mode （G112） Modal *G13.1 Polar coordinate interpolation mode cancel （G113） XpYp level selection Modal *G18 ZpXp level selection...

  • Page 45: Omitting Word Input

    Chapter Ⅱ G Commands Radial cutting multi-cycle Multi thread cutting cycle *G80 Cancel drilling fixed cycle End drilling cycle End rigid/common tapping cycle Modal End boring cycle Side drilling cycle Side rigid/common tapping cycle Side boring cycle Axial cutting cycle Thread cutting cycle Modal Radial cutting cycle...
  • Page 46 GSK988T Turning CNC System User Manual Table 2-2 Command Function Initial value when power-on address Cutting depth in G71 №51 parameter value Move distance of X tool retraction in G73 №53 parameter value Cutting depth in G72 №51 parameter value Move distance of X tool retraction in G73 №54 parameter value Move distance of tool retraction in G71, G72...

  • Page 47: Related Definitions

    Chapter Ⅱ G Commands X20 Z30； （rapidly traverse to X20 Z30；the modal G0 can be omitted） G1 X50 Z50 F300； （linear interpolation to X50 Z50， 300mm/min； the modal G1 is valid） X100； （linear interpolation to X100 Z50，300mm/min；When Z coordinate is not input, the current coordinate value Z50 is used; F300 is kept, G01 can be omitted when it is modal.）...

  • Page 48: Linear Interpolation G01

    GSK988T Turning CNC System User Manual Command path: Fig. 2-1 rapid traverse(positioning) Execution process: Program： （Diameter programming） G00 X40.0 Z56.0； （Absolute programming）or G00 U60.0 W-36.0； （Incremental programming）or G00 X40.0 W-36.0； （Compound programming）or G00 U60.0 Z56.0； （Compound programming） Fig. 2-2 positioning example Note 1: The rapid traverse speed(G00) is set in No.1420 and is not related to the commanded feedrate F value in the block.

  • Page 49: Arc Interpolation G02, G03

    Chapter Ⅱ G Commands Command path: Fig. 2-3 linear interpolation Execution process： Programming： （Diameter programming） G01 X40.0 Z20.0 F500； （Absolute programming） or G01 U20.0 W-26.0； （Incremental programming）or G01 X40.0 W-26.0； （Compound programming）or G01 U20.0 Z20.0； （Compound programming） Fig. 2-4 Linear interpolation example Note 1: The tool traverses to the specified position along the linear at the speed specified by F.
  • Page 50 GSK988T Turning CNC System User Manual Distance between starting point of Xp axis to center of arc (with sign, its range referred to the following table) Distance between starting point of Yp axis to center of arc (with sign, its range referred to the following table) Distance between starting point of Zp axis to center of arc (with sign, its range referred to the following table)
  • Page 51 Chapter Ⅱ G Commands Execution process： （taking G02 as an example） Fig. 2-7 G02 arc interpolation Note 1: One or all of Xp, Yp, Zp can be omitted. When one of them is omitted, it means the coordinate values of the starting point and the end point of the axis is consistent; when all are omitted, it means the two points are in the same position.

  • Page 52: Dwell G04

    GSK988T Turning CNC System User Manual G02/G03 compound programming example: Φ22 Fig. 2-8 Arc programming Program：O0001 N001 G0 X40 Z5； （Rapidly traverse） N002 M03 S200； （Start the spindle） N003 G01 X0 Z0 F900； (Approach the workpiece) N005 G03 U24 W-24 R15；（Cut arc R15） N006 G02 X26 Z-31 R5；...

  • Page 53: Cylindrical Interpolation 7.1

    Chapter Ⅱ G Commands Value range of P__, X__ or U__ is shown below. Address Incremental system Metric input Inch input X, U ISB system -99999.999～99999.999 -9999.9999～9999.9999 ISC system -9999.9999～9999.9999 -999.99999～999.99999 ISB, ISC 0~99999999 0~99999999 Note 1: The system exactly stop a block when P, X, U are not input or P, X , U specify negative values. Note 2: X, U can command the negative value.
  • Page 54 GSK988T Turning CNC System User Manual ⎧ ⎫ X(U) ⎪ ⎪ Y(V) ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ Z(W) G07.1 ⎨ ⎬ ； Activate the cylindrical interpolation code. G07.1 can be written to G107 ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪...
  • Page 55 Chapter Ⅱ G Commands moment, the circular interpolation command is: G18 Z__ C__； G02(G03) Z__ C__ R__； For C axis, when No. 1022 is set to 2, the arc command is : G19 C__ Z__； G02(G03) Z__ C__ R__； Note 5: Any tool radius compensation mode being executed must be cleared before the system enters the cylindrical interpolation mode.
  • Page 56 GSK988T Turning CNC System User Manual Example： O0001 (CYLINDRICAL INTERPOLATION); N01 G00 Z100.0; N02 M14; (the spindle is switched into position control mode) N03 G28 H0;(zero return of C axis ) N04 G18 C0; N05 G07.1 C67.299; N06 G01 G42 Z120.0 F250; N07 C30.0;...

  • Page 57: Polar Coordinate Interpolation G12.1, G13.1

    Chapter Ⅱ G Commands together execute interpolation, which is taken as the interpolation of Z-X level coordinate system in G18 level. When decoding “N07 C30.0”, the angle movement amount of the rotary axis C si converted into the movment amount of linear axis: π...
  • Page 58 GSK988T Turning CNC System User Manual O0001； N10 T0202 Virtual axis … Path after tool nose N100 G00 X150 C0 Z0； radius compensation N110 G12.1； N120 G42 G01 X80 F200; N130 C20; Program path N150 N140 N140 G03 X40 C40 R20; N160 N150 G01 X-40;...

  • Page 59: Metric/Inch Switch G20, G21

    Chapter Ⅱ G Commands from the angle 0. So, the spindle must be positioned before the polar coordinate interpolation is executed. Note 12: The current position displays the actual coordinates in the polar coordinate interpolation. However, the remainder distance is displayed according to the coordinates in the polar coordinate interpolation level(rectangular coordinate level).

  • Page 60: Skip Interpolation G31

    GSK988T Turning CNC System User Manual Fig. 2-12 Note 1: The initial mode of G22/G23 can be set by No. 3402 Bit 7(G23) when the system is turned on again. Note 2: G22 stored travel check is limited to the stored travel limit check 2, and the detailed is referred to OPERATION;...
  • Page 61 Chapter Ⅱ G Commands 1. The next block of G31 is the incremental coordinate programming below. Fig. 2-13 2．The next block of G31 is the absolute coordinate programming of one axis below. Fig. 2-14 3. The next block of G31 is the absolute coordinate programming of two axes below Program: G31 Z200 F100 G01 X100 Z300 Fig.

  • Page 62: Automatic Tool Offset G36, G37

    GSK988T Turning CNC System User Manual #5065, its last bit digit corresponds to the No. n axis of the system), at the same time, the movement in G31 block ends. No. 6200 Bit 19SK0) sets the invalid input state of the skip signal, and when it is set to 0, the input signal 1 is valid.
  • Page 63 Chapter Ⅱ G Commands CNC alarms, ends the block and does not update the offset compensation value. Fig. 2-16 G36, G37 automatic tool offset command use From the initial position to the measured position specified by Xa or Za in G36 or G37, the tool rapidly traverses to A zone and stops at T point (Xa–γx or Za–γz) , and then traverses to B, C and D at the feedrate set by No.6241( or No.6242).

  • Page 64: Reference Position Function

    GSK988T Turning CNC System User Manual M30; Tool No. Programming zero X measured position Z measured position Offset value Offset value (Before measure) (After measure) Fig. 2-18 2.12 Reference Position Function 2.12.1 Reference position return G28 Command function: move from the starting point at the rapid traverse speed to the middle position specified by IP_ and then return to the reference position.
  • Page 65 Chapter Ⅱ G Commands Fig. 2-19 Note 1: After the system is turned on, it does not execute the manual reference position return; when the system executes G28 reference position return, it judges it alarms or executes like the manual reference position return according to No.

  • Page 66: Related Function Of Coordinate System

    GSK988T Turning CNC System User Manual coordinate system is changed; Note 5: Each axis separately moves at the rapid traverse speed from the starting point through the middle point to the reference position, i.e. G00 mode. 2.13 Related Function of Coordinate System The tool position is expressed with the coordinate value of the coordinate system, the coordinate value is specified by the programmed axis.

  • Page 67: Selecting Machine Coordinate System Position G53

    Chapter Ⅱ G Commands Reference position. Origin of machine coordinate system is a fixed point on the machine, No. 1240 value confirms the relative position of the reference position and the machine origin. The 2 reference position, No.1214 set the 2 reference position position in the machine coordinate system.

  • Page 68: Workpiece Coordinate System Setting G50

    GSK988T Turning CNC System User Manual Fig.2-21 Note 1: G53 is non-modal, and is valid in other blocks; Note 2:G53 specifies the absolute position value in the machine coordinate system. The axis command is ignored when some axis uses the incremental value command; Note 3: When G53 is commanded, the system cancels the tool nose radius compensation;...

  • Page 69: Workpiece Coordinate System Selection Command G54～G59

    Chapter Ⅱ G Commands Note 1: After G50 changes the workpiece coordinate system, other workpiece coordinate system also performs the same offset; Note 2: In G50, the system can omit one or all command addresses for each axis, the current coordinate value is not input when the command value for each axis is not input.
  • Page 70 GSK988T Turning CNC System User Manual G55 workpiece coordinate system 2； G56 workpiece coordinate system 3； G57 workpiece coordinate system 4； G58 workpiece coordinate system 5； G59 workpiece coordinate system 6； Command explanation: G54～G59 are modal. Note 1: The workpiece is created after the system is turned on and executes the reference position return.

  • Page 71: Local Coordinate System Setting G52

    Chapter Ⅱ G Commands Fig. 2-24 Note 4: The coordinate offset value created by G50 adds to the one of all workpiece zero to make ensure that all workpiece coordinate systems offset the same value as Fig. 3-21: Fig. 2-25 Note 5: The workpiece zero offset value of G54～G59 workpiece coordinate system can be set in the parameters and input in the coordinate setting window;...
  • Page 72 GSK988T Turning CNC System User Manual Command function: commanding G52 in the program can set the local coordinate system in the workpiece coordinate system G54~G59. The origin of the local coordinate system can set in the position specified by IP_ in the workpiece coordinate system.

  • Page 73: Level Selection Command G17～G19

    Chapter Ⅱ G Commands reference position return when the parameter is set to 1. 2.13.5 Level selection command G17～G19 Command function: The level selection command is used to the arc interpolation and the tool nose radius compensation selection level. Once the system has selected the level, it can execute the arc interpolation and tool nose radius compensation on the level.

  • Page 74: Fixed Cycle Command

    GSK988T Turning CNC System User Manual the next block, the programmed contour in G64 is different from the actual, and the difference condition is determined by F value and the angle between two paths, the more the different is, the more F value is. Command format：...
  • Page 75 Chapter Ⅱ G Commands surface is completed by radial feeding(X) and axial (Z or X and Z) cutting. Command format：G90 X（U）__ Z（W）__ F__； （cylinder cutting） G90 X（U）__ Z（W）__ R__ F__； （taper cutting） Command specifications: G90 is modal; X_,Z_ Coordinates of longitudinal cutting (C point in the figure below) U_,W_ Movement to end point (C point in the figure below) of longitudinal cutting Cutting feedrate...
  • Page 76 GSK988T Turning CNC System User Manual Fig. 2-29 Cutting path: Relative position between cutting end point and starting point with U, W, R, and tool path of U, W, R with different sign symbols are as Fig. 2-28: 1） U>0，W<0，R>0 2）...

  • Page 77: Radial Cutting Cycle G94

    Chapter Ⅱ G Commands Example: Fig. 2-29, rod Φ125×110 Fig.2-31 Program： Program : O0002; M3 S300 G0 X130 Z3; G90 X120 Z-110 F200; (A→D, cut Φ120) X110 Z-30; X100; X90; （A→B，6 times cutting cycle Φ60, increment of 10mm） X80; X70; X60;...
  • Page 78 GSK988T Turning CNC System User Manual Address Incremental Inch (inch) input Metric（mm）input system ISB system -99999.999～99999.999mm -9999.9999～9999.9999 inch ISC system -9999.9999～9999.9999 mm -999.99999～999.99999 inch Cycle process: ① Z rapidly traverses from starting point to cutting starting point; ② Cutting feed (linear interpolation) from the cutting starting point to cutting end point; ③...
  • Page 79 Chapter Ⅱ G Commands Cutting path: Relative position between cutting end point and starting point with U, W is as Fig.2-32: 1） U>0 W<0 R<0 2） U<0 W<0 R<0 （3）U>0 W>0 R<0 （│R│≤│W│） 4）U<0 W>0 R<0 （│R│≤│W│） Fig. 2-34 Example: Fig. 2-35, rob Φ125×112 Program：...

  • Page 80: Multiple Cycle Commands

    GSK988T Turning CNC System User Manual G94 X108 Z-30 R-10 X96 R-20 X84 R-30 （C→B→A，cut Φ60） X72 R-40 X60 R-50； M30； Note 1:These fixed cycle commands are used to ZX level. The system alarms when other axis motion in the block of the fixed cycle command is commanded; Note 2: After X(U) , Z(W) , R are executed in the canned cycle command, their command values are value if X(U) , Z(W) ,R are not redefined by executing a new canned cycle commands.
  • Page 81 Chapter Ⅱ G Commands are the same one. The command is applied to the formed roughing of non-formed rod. Command format：G71 U（Δd） R（e） F T ； ⑴ G71 P（ns） Q（nf） U（Δu） W（Δw）； ⑵ N（ns） ．．．．．； ．．．．．．．．； ．．．．F； ．．．．S； ．．．． ⑶ N（nf）．．．．．；...
  • Page 82 GSK988T Turning CNC System User Manual Roughing The finishing path is the one after offsetting the finishing allowance（Δu, Δw）and is the path path contour formed by executing G71. A, B, C point of finishing path after offset corresponds separately to A’, B’, C’ point of roughing path, and the final continuous cutting path of G71 is B’→C’...
  • Page 83 Chapter Ⅱ G Commands ② X moves from A’is Δd( tool infeed), ns block is for tool infeed at rapid traverse speed with G0, is for tool infeed at feedrate F with G71, and its direction of tool infeed is that of A→B point;...
  • Page 84 GSK988T Turning CNC System User Manual B’ B’ A’ C’ A’ C’ A’ C’ A’ C’ B’ B’ Fig.2-37 Example：Fig. 2-38 Fig.2-38 Program：O0004； G00 X200 Z10 M3 S800； （Spindle clockwise with 800 rev/min） G71 U2 R1 F200； （Cutting depth each time 4mm，tool retraction [in diameter]）...
  • Page 85 Chapter Ⅱ G Commands G71 P80 Q120 U0.5 W0.2； （roughing a---e， X machining allowance 0.5mm , Z 0.2mm） N80 G00 X40 S1200； （Positioning） G01 Z-30 F100 ； （a→b） X60 W-30； （b→c） a→b→c→d→e blocks for finishing path W-20； （c→d） N120 X100 W-10； （d→e）...

  • Page 86: Radial Roughing Cycle G72

    GSK988T Turning CNC System User Manual e（set by a parameter） Fig. 2-42 Execution process sketch: Fig. 2-43 Note 1: For grooving, X (U), Z(W) must be specified, and W0 is done when Z does not move. Note 2: For grooving, the finishinig allowance is specified to X direction, is invalid for Z direction. Note 3: For grooving, the tool retraction amount is left to make the tool approach the workpiece(Label 25, 26) with G1 speed after the current grooving is done to execute the next grooving.
  • Page 87 Chapter Ⅱ G Commands ⑵ 2nd blocks for defining the block interval, finishing allowance; ⑶ 3rd blocks for some continuous finishing path, counting the roughing path without being executed actually when G72 is executed. According to the finishing path, the finishing allowance, the path of tool infeed and retract tool, the system automatically counts the path of roughing，the tool cuts the workpiece in paralleling with Z, and the roughing is completed by multiple executing the cutting cycle tool infeed→cutting feed→tool retraction.
  • Page 88 GSK988T Turning CNC System User Manual the starting point of finishing path (i.e. starting point of ns block)is the same these of starting point and end point of G72, called A point; the first block of finishing path(ns block)is used for Z rapid traversing or cutting feed, and the end point of finishing path is called to B point;...
  • Page 89 Chapter Ⅱ G Commands ISC system 1～99999 1～99999 Execution process： Fig. 2-44 ① X rapidly traverses to A’ from A point, X travel is Δu, and Z travel is Δw; ② X moves from m A’is Δd( tool infeed), ns block is for tool infeed at rapid traverse speed with G0, is for tool infeed at G72feedrate F in G1, and its direction of tool infeed is that of A→B point;...
  • Page 90 GSK988T Turning CNC System User Manual A’ B’ B’ A’ C’ C’ C’ C’ B’ A’ A’ B’ Fig.2-45 Example：Fig. 2-46 Starting point (176,10) Fig.2-46 Program： O0005； G00 X176 Z10 M03 S500 （Change No.2 tool and execute its compensation, spindle rotation with 500 rev/min） G72 W2.0 R0.5 F300；...

  • Page 91: Closed Cutting Cycle G73

    Chapter Ⅱ G Commands G01 X160 F120； （Infeed to a point ） X80 W20； （Machining a—b） W15； （Machining b—c） Blocks for finishing path N20 X40 W20 ； （Machining c—d） G70 P050 Q090 M30； （Finishing a—d） 2.15.3 Closed Cutting Cycle G73 Command functions: G73 is divided into three parts: ⑴...
  • Page 92 GSK988T Turning CNC System User Manual blocks are valid when executing ns～nf to command G70 finishing cycle. 3. There are only G00, G01 in ns block. 4. In ns～nf blocks, there are only G commands:G00, G01, G02, G03, G04, G96, G97, G98, G99, G40, G41,G42 and the system cannot call subprograms(M98/M99) 5.
  • Page 93 Chapter Ⅱ G Commands roughing, and Z cutting direction is opposite to the sign symbol of Δk: Δk＞0, cut in Z negative direction in roughing. It is reserved after Δk command value is executed and the system rewrites No.5136 value. NO.5136 value is regarded as the travel of X tool retraction of roughing when W（Δk）is not input.
  • Page 94 GSK988T Turning CNC System User Manual →C ：Cutting feed. ③ C →A ：Rapid traverse； ④ Second roughing A →B →C ： →B ：Rapid traverse speed in ns block in G0, cutting feedrate specified by G73 in ns block in G1; →C ：Cutting feed.
  • Page 95 Chapter Ⅱ G Commands B” B’ A’ A” C’ C” C” C’ A” A’ B’ B” B” B’ A’ A” C” C’ C’ C” A” A’ B’ B” Fig.2-48 Example：Fig. 2-49 Fig.2-49 Program：O0006； G99 G00 X200 Z10 M03 S500; （Specify feedrate per rev and position starting point and start spindle）...

  • Page 96: Finishing Cycle G70

    GSK988T Turning CNC System User Manual G73 P14 Q19 U0.5 W0.3 F0.3 ; （X roughing with 0.5 allowance and Z 0.mm） N14 G00 X80 W-40 ; G01 W-20 F0.15 S600 ; X120 W-10 ; W-20 ; Blocks for finishing G02 X160 W-20 R20 ; N19 G01 X180 W-10 ;...

  • Page 97: Axial Grooving Multiple Cycle G74

    Chapter Ⅱ G Commands executed end point of current path. 7. G70 cannot be executed in MDI mode, otherwise, the system alarms. 2.15.5 Axial Grooving Multiple Cycle G74 Command function: Axial (X) tool infeed cycle compounds radial discontinuous cutting cycle: Tool infeeds from starting point in radial direction(Z), retracts, infeeds again, and again and again, and last tool retracts in axial direction, and retracts to the Z position in radial direction, which is called one radial...
  • Page 98 GSK988T Turning CNC System User Manual coordinate between C and A is Δd； End point of End position of axial tool retraction from the end point of radius tool retraction, axial cutting defining with D (n=1,2,3……), Z coordinate of D is the same that of starting point, X cycle coordinate of D...
  • Page 99 Chapter Ⅱ G Commands (cutting end point) is less than that of A (starting point), the system executes X positive tool retraction, otherwise, X negative tool retraction; ⑤ Axial(Z axial) rapid retract tool to Dn, No. n axial cutting cycle is completed. If the current axial cutting cycle is not the last one, execute ⑥...

  • Page 100: Radial Grooving Multiple Cycle G75

    GSK988T Turning CNC System User Manual Fig. 2-51 Program： O0007； G0 X40 Z5 M3 S500； （Start spindle and position to starting point of machining） G74 R0.5 ； （Machining cycle） G74 X20 Z-20 P3000 Q5000 F50； (Z tool infeed 5mm and tool retraction 0.5mm each time; rapid return to starting point(Z5) after cutting feed to end point(Z-20), tool...
  • Page 101 Chapter Ⅱ G Commands 3. The tool can stop in Auto mode and traverse in Manual mode when G75 is executed, but the tool must return to the position before executing in Manual mode when G75 is executed again, otherwise the following path will be wrong; 4.
  • Page 102 GSK988T Turning CNC System User Manual cutting with sign symbols and its value range is referred to the following table. The system defaults the axial(Z) tool retraction is 0 when R（Δd）和Q（Δk） are omitted. The system defaults to be the negative tool retraction when Z(W) is omitted.

  • Page 103: Notes For Multi Cycle Machining

    Chapter Ⅱ G Commands X executes the cutting feed (Δi+e)again and executes ②; after X cutting feed (Δi+e)is executed again, the end point of X cutting feed is on B or is not on it between A and B cutting feed to B and then execute ④;...

  • Page 104: Threading Cutting

    GSK988T Turning CNC System User Manual Note 3. In MDI and DNC mode, G70，G71，G72 or G73 can not be specified, otherwise, the system alarms. But in MDI and DNC mode, G74，G75 or G76 can be specified. Note 4: The block quantity of G70, G71, G72 or G73 in the sequence numbers specified by P and Q cannot exceed 100.
  • Page 105 Chapter Ⅱ G Commands Command specifications: G32 is modal; End point coordinate value. It can be specified by the absolute command value or incremental command value. The system specifies the different IP_ value to execute the straight thread cutting, end face thread cutting and taper thread cutting. Metric pitch is moving distance of long axis when the spindle rotates one-turn and its value range is referred to the following table.
  • Page 106 GSK988T Turning CNC System User Manual Programmed end point of thread Tool path Fig. 2-54 thread run-out Command path: point Current point Fig.2-55 G32 path Difference between long axis and short axis: Fig.2-56 long axis, short axis Note 1: When the thread run-out, the short axis executes the thread run-out at the rapid speed, and the long does it at the current thread cutting speed.

  • Page 107: Thread Cutting With Variable Lead G34

    Chapter Ⅱ G Commands executes not to stop until the current block is executed completely; if the continuous thread cutting is executed, the program run pauses after thread cutting blocks are executed completely; Note 9: In Single block, the program stops run after the current block is executed. The program stops run after all blocks for thread cutting are executed;...
  • Page 108 GSK988T Turning CNC System User Manual It is the first thread pitch from starting point, and its range is the same that of Incremental value or decremental value of spindle per pitch, R=F2-F1, R is with a direction; F1>F2, the pitch decreases when R is negative; F1<F2, the pitch increases when R is positive;...

  • Page 109: Thread Cutting Cycle G92

    Chapter Ⅱ G Commands Variable pitch thread cutting G00 U-1.0； Tool retraction G34 W-78 F4 J5 K2 R0.2； Z returns to initial point G00 U10； Z4； M30； 2.16.3 Thread cutting cycle G92 Command function: Tool infeeds in radial(X) direction and cuts in axial(Z or X, Z) direction from starting point of cutting to realize straight thread, taper thread cutting cycle with constant thread pitch.
  • Page 110 GSK988T Turning CNC System User Manual radius), Z is long axis; and reversely, X is the long axis. Fig. 2-60 Straight thread Fig.2-61 Taper thread Cycle process: straight thread as Fig.2-60 and taper thread as Fig.2-61. ① X traverses from starting point to cutting starting point; ②...

  • Page 111: Multiple Thread Cutting Cycle G76

    Chapter Ⅱ G Commands cutting is completed with Pause on screen; Note 8: After executing single block in thread cutting, the program run stops after the system returns to starting point(one thread cutting cycle is completed); Note 9: Thread cutting decelerates to stop when the system resets, emergently stops or its driver alarms; Note 10: The system alarms when the thread run-out length of the long axis is more than the thread machining length of the long axis;...
  • Page 112 GSK988T Turning CNC System User Manual Command explanations: Starting point Position before block runs and behind blocks run, defined by A point. (end point) End point of End point of thread cutting defined by X(U) Z(W) ,.The tool will not thread reach the point in cutting if there is the thread run-out path.
  • Page 113 Chapter Ⅱ G Commands P(r) Width of thread run-out 00～99(unit: 0.1×L,L is the thread pitch) with 2-digit digital. It is valid after r command value is executed and the value of system parameter No.5130 is rewritten to r. The value of system parameter No.5130 is the width of thread run-out when r is not input.
  • Page 114 GSK988T Turning CNC System User Manual (the system automatically confirms the run-out direction according to the initial pont of the program), is modal and its value is specified by radius. When the thread run-out is executed, the range in the long axis direction is the same that of G32, is modal without direction, and the value is specified by radius.
  • Page 115 Chapter Ⅱ G Commands Fig. 2-64 Execution process: ① The tool rapidly traverses to B , and the thread cutting depth is △d. The tool only traverses in X direction when a=0; the tool traverses in X and Z direction and its direction is the same that of A→D when a≠0;...
  • Page 116 GSK988T Turning CNC System User Manual Note 4: All or some addresses of G76 P （m） （r） （a） Q （△dmin） R （d） are omitted, and omitted addresses runs according to the setting value; Note 5: m, r, a uses the same address P to be input one time. When m, r, a are all omitted,the system runs at the setting value of No.5142, No.5130 or No.5143;...

  • Page 117: Constant Surface Speed Control G96, Constant Rotational Speed Control G97

    Chapter Ⅱ G Commands G76 X60.64 Z-62 P3680 Q1800 F6; (Tooth height 3.68, the first cutting depth 1.8) G00 X100 Z50 ; (Return to starting point of program) M30; (End of program) 2.17 Constant Surface Speed Control G96, Constant Rotational Speed Control G97 Command function: The constant surface speed control is valid, the cutting surface speed is defined (m/min) and the constant rotational speed control is cancelled.
  • Page 118 GSK988T Turning CNC System User Manual the surface of workpiece with diameter changing. Surface speed=spindle speed× |X| × π ÷1000 (m/min) Spindle speed: r/min |X|: absolute value of X absolute coordinate value (diameter value), mm π≈3.14 Fig. 2-66 In G96, the spindle speed is changed along with the absolute value of programming path X absolute coordinate value in the course of cutting feed (interpolation), but it is not changed in G00 because there is no actual cutting and is counted based on the surface speed of end point in the program block.

  • Page 119: Feedrate Per Minute G98, Feedrate Per Rev G99

    Chapter Ⅱ G Commands current spindle gear, at this time, the spindle speed is limited to max. one of current spindle gear; Note 6: In thread cutting, To gain the precise thread machining, it should not be adopted with the constant surface speed control but the constant rotational speed (G97) in the course of thread cutting;...

  • Page 120: Drilling/Boring Fixed Cycle Command

    GSK988T Turning CNC System User Manual speed(r/min). If the spindle speed varies, the actual feedrate changes too. If the spindle cutting feed amount per rev is specified by G99 FXXXX , the even cutting texture on the surface of workpiece will be gotten.

  • Page 121: End Drilling Cycle G83 /Side Drilling Cycle G87

    Chapter Ⅱ G Commands Operation 6: rapidly traverse to initial level Operation sequence Rapid traverse Tool Operation 1 Cutting feed Hole position Initial level Starting point Operation 2 Operation 6 R 点 Point R level Operation 5 Operation 3 Hole bottom level Pause at hole bottom Operation 4 Fig.
  • Page 122 GSK988T Turning CNC System User Manual or the incremental value specifies the distance from R level to the hole bottom, which is value in the specified block. It is the distance from the initial level to point R, is specified by radius value with direction.
  • Page 123 Chapter Ⅱ G Commands High-speed deep hole drilling cycle Execution process: ① The tool rapidly positions to the hole from Pause Operation sequence starting point （the hole is determined Rapid traverse by the hole position data at the initial level） ； Tool Rapidly position to point R ②...

  • Page 124: Starting Point

    GSK988T Turning CNC System User Manual Deep hole drilling cycle Operation sequence Pause Execution process: ① The tool rapidly positions to the hole from Rapid traverse Tool starting point（the hole is determined by Z（X）feed the hole position data at the initial level）; Hole position ②...

  • Page 125: G89

    Chapter Ⅱ G Commands Program example: Suppose the current system is ISB, the minimum input unit is 0.001mm and RTR is set to 1. ；feed mode per minute ；activate C indexing（suppose M51 is for activating C indexing） M3 S1500 ；tool starts rotation G0 X50 C0 Z-4 ；X and C axis position to the starting point G83 X100 Z-50 R4 Q5000 P3000...

  • Page 126: Cancelling Drilling/Boring G80

    GSK988T Turning CNC System User Manual Relevant command explanation is referred to those of G83/87. Execution process: Boring cycle ① The tool rapidly positions to the hole Pause from starting point (the hole is determined by Operation sequence the hole position data at the initial level）; Tool Rapid traverse ②...

  • Page 127: Tapping Mode

    Chapter Ⅱ G Commands specify rigid mode without M command )specifies the common tapping cycle and rigid tapping cycle when programming. When the rigid tapping is executed, the machine must have the corresponding conditions, i.e. the spindle uses the position control and is applied to Cs axis, otherwise the system does not support the function.

  • Page 128: End Rigid Tapping Cycle (G84) / Side Rigid Tapping Cycle (G88)

    GSK988T Turning CNC System User Manual 2.20.2 End Rigid Tapping Cycle (G84) / Side Rigid Tapping Cycle (G88) Command function：When the spindle is controlled in rigid mode (it is taken as the servo motor), the rigid tapping cycle is executed. Command format ：G84 X (U)_ C (H)_ Z (W)_ R_ Q_ P_ F_ K_ M_ ;...

  • Page 129: Operation Sequence

    Chapter Ⅱ G Commands Standard rigid tapping cycle Q value is not specified or Q value is 0 High speed deep hole rigid Q value is specified（it is not zero）and PCP（NO.5200#5）=“0” tapping cycle Deep hole rigid tapping Q value is specified（it is not zero）and RTR（NO.5200#5）=“1” cycle Standard rigid tapping cycle（Q value is not specified or Q value is 0）...

  • Page 130: Pause At Hole Bottom

    GSK988T Turning CNC System User Manual Execution process: High-speed deep hole rigid tapping cycle ① The tool positions the hole position from Operation Pause Starting point（i.e. the point on the initial sequence level is confirmed by the hole position); Rapid traverse Tool ②...
  • Page 131 Chapter Ⅱ G Commands Deep hole rigid tapping cycle Execution process: ① The tool rapidly positions to the hole from  Pause Operation sequence starting point (the hole is determined by Rapid traverse the hole position data at the initial level）;  Tool ②...
  • Page 132 GSK988T Turning CNC System User Manual OVE(No.5202#6)=“0”: Spindle speed command when extraction is done DOV= “1” DOV= “0” OV3= “1” OV3= “0” Spindle speed command with Programmed (No.5211) Within 100～200％ 100％ “J” specifying extraction: command Out of 100～200％ 100％ Spindle speed command without “J” specifying extraction: (No.5211) OVE(No.5202#6)=“1”: Spindle speed command when extraction is done...
  • Page 133 Chapter Ⅱ G Commands Note 7: The tapping cycle temporarily cancels the tool nose radius compensation, and it recovers when the fixed cycle is cancelled. Note 8: When the fixed cycle is cancelled in rigid tapping, the used S value is also cleared (its state is the same that of the specified S0).

  • Page 134: End Common Tapping Cycle (G84) /Side Common Tapping Cycle (G88)

    GSK988T Turning CNC System User Manual ；suppose M28 is for the spindle cancelling rigid tapping mode ；End of program 2.20.3 End Common Tapping Cycle (G84) /Side Common Tapping Cycle (G88) When G84/G88 executes the common tapping, the miscellaneous function controls the spindle start/stop: M03(spindle CW), M04(spindle CCW) and M05 (spindle stop);...
  • Page 135 Chapter Ⅱ G Commands lead. Thread lead formula in per minute mode =cutting feedrate F/spindle speed S; Thread lead formula in per rotation mode=cutting feedrate F. Note: The spindle speed S is defined to be S modal value memorized by the CNC before the common tapping, The thread lead is counted by the specified F value.
  • Page 136 GSK988T Turning CNC System User Manual ④The tapping axis moves the hole bottom level at the cutting feedrate specified by F along with the spindle rotation; （when the tool is about to reach the hole bottom position specified by the programmed, the spindle stops M05 output and the spindle starts to decelerate, the tapping axis holds feed until the spindle exactly stops rotation）...

  • Page 137: Automatic Chamfering Function

    Chapter Ⅱ G Commands point. Note 5：The tapping cut decelerates to stop when the system resets, emergently stops or the drive unit alarms. The spindle is in the course of stopping rotation but Z has stopped feed, which maybe damage the workpiece and screw tap. So, do not force to stop G84/G88. Note 6：N0.5209#0=0, i.e.
  • Page 138 GSK988T Turning CNC System User Manual Between arc interpolation and linear interpolation Between arc interpolation and arc interpolation Command format： ，C_ ； （chamfering） ，R_ ； （corning R） Command explanation: one chamfering block or corning R block is inserted when the above format is specified at the end of the specified linear interpolation (G01) or arc interpolation (G02, G02) block.
  • Page 139 Chapter Ⅱ G Commands Note 1: Even if the chamfering (, C) or corning R(,R) is specified in other blocks besides G01 and G02/G03 (except for G32, G34), it is ignored. Note 2: The block following chamfering or corning R for the chamfering or corning operation must be the one of G01 or G02/G03.

  • Page 140: Macro Command

    GSK988T Turning CNC System User Manual 2.22 Macro Command GSK988T provides the macro command which is similar to the high language, and can realize the variable assignment, and subtract operation, logic decision and conditional jump by user macro command, contributed to compiling part program for special workpiece, reduce the fussy counting and simplify the user program.

  • Page 141: System Variable

    Chapter Ⅱ G Commands When #2=<Null>, #2 EQ #0，#2 NE 0, the condition is tenable. When #2=0, #2 EQ #0，#2 NE 0, the condition is not tenable. （2）Variable Type The variable is divided into the different variable types according to the variable number, their use and prosperity are different as follows: Variable range Variable type...
  • Page 142 GSK988T Turning CNC System User Manual with IO are defined by PLC. The input signal can be only read, and the output signal can be read and written. Variable System variable of interface signal number Function Corresponding G, F signals Read the signal with 16 bits according to #1000 corresponding to G54.0～G54.7,...
  • Page 143 Chapter Ⅱ G Commands The alarm message only displays 26 characters (13 Chinese characters), and the system only displays the first 26 characters when there are more than it. The value of the alarm number being #3000 adds 3000, the alarm range is 3000 to 3200.
  • Page 144 GSK988T Turning CNC System User Manual When #3902 value is changed, No.6713 value also changes. （6）Modal message The previous modal message which is being processed can be read. Variable number Function #4001 G00, G01, G02, G03, G32, G34, G90, G92, G94 No.

  • Page 145: Operation And Jump Command

    Chapter Ⅱ G Commands system #5061--#5065 Skip signal position Workpiece including coordinate system #5081--#5085 Tool length compensation value The read is the position value after the last block execution. The units digit from 1 to 5 of variable number corresponds the No. n axis. （8）Compensation value of workpiece coordinate system The workpiece zero offset value can be read and written.
  • Page 146 GSK988T Turning CNC System User Manual Arc sine #i=ASIN[#j]; Execute arc sine operation; #j value is from -1 to 1 cosine #i=COS[#j]; Execute cosine operation ; Angle unit is degree; Arc cosine #i=ACOS[#j]; Execute arc cosine; #j value is from -1 to 1 Function range: 0°～180°...
  • Page 147 Chapter Ⅱ G Commands "EX", "BIN", "BI", "BCD", "BC", "AND", "AN", "*", "/", "OR", "XOR", "XO","+", "-", （2）EXP function input value cannot be more than 80, otherwise, the system alarm; （3）”/” character in <expression>(in the right of assignment”=” or in the bracket []) is taken as the division operator instead of optional block skip code;...
  • Page 148 GSK988T Turning CNC System User Manual #101=10 （the binary is: 00001010） #102=12 （the binary is: 00001100） #103=#101 OR #102 （or the operation result is : 00001110） The window display result of macro variable is #101=10.000000 #102=12.000000 103=14.000000 （12）The function BIN converses the decimal into the binary displayed in 8421 format BCD.
  • Page 149 Chapter Ⅱ G Commands IF, WHILE logical operation character rules are as follows: Operator substitute character definition （=） <> （≠） > （＞） >= （≥） < （＜） <= （≤） Note 1: When the system transfers to the block with the serial number n and specifies the another exceeding the serial number range between 1 and 99999, P/S alarms, and the expression can specifies the serial number;...

  • Page 150: Macro Program Statement And Nc Statement

    GSK988T Turning CNC System User Manual 2.22.4 Macro program statement and NC statement The following blocks are macro program statements: Including arithmetic or logical operation (=); Including control statement(such as GOTO, DO, END); Including macro program call command (G65, G66, G67). Any NC blocks except for macro program statement are NC statements.
  • Page 151 Chapter Ⅱ G Commands Example: B_A_D_…J_K_ Correct B_A_D_…K_J_ Incorrect Argument specification II uses A, B and C once each and uses I, J, and K up to ten times. Argument specification II is used to pass values such as three-dimensional coordinates as arguments.
  • Page 152 GSK988T Turning CNC System User Manual （2）Modal call of macro program G66, G67 Command format：G66 P L __ 〈argument list 〉； ……； G67； Command function: set the modal message of the specified macro program L times for calling P, send the argument to the called macro program. Command explanation: G66：modal macro program call needs one line to be specified;...

  • Page 153: Chapter Ⅲ Mstf Commands

    Chapter Ⅳ Tool Nose Radius Compensation Chapter Ⅲ MSTF Commands 3.1 M (Miscellaneous Function) M command consists of command address M and its following 1～2 or 4 bit digits, used for controlling the flow of executed program or outputting M commands to PLC . There is one valid M code in one block.

  • Page 154: Optional Stop M01

    GSK988T Turning CNC System User Manual When M00 are other G command are in the same block, the system executes the command in the block, then M00, and last stops running. 3.1.4 Optional stop M01 Command format: M01 or M1 Command function: after the block containing M01 is executed, the system stops the automatic run and the single block stopping signal lights.

  • Page 155: Subprogram Call M198

    Chapter Ⅳ Tool Nose Radius Compensation The called subprogram can call other subprograms. The subprogram called by the main program is called as the one-embedded subprogram, and the one called by the one-embedded subprogram is called as the two-embedded subprogram and so forth. One main program can call 12-embedded subprogram(including macro program call).

  • Page 156: The Following M Commands For Standard Ladder(Some Functions Modified By K Parameters)

    GSK988T Turning CNC System User Manual O1009； O1010； N0010 ………; N1020………; N0020……….; N1030………; N0030……….; ……… N0040 M98 P1010; ……… N0050……….; N1100 M99 P0070; N0060……….; N0070……….; …….. Fig. 3-3 Fig. 3-4 Note 1: M99 does not need to be specified in the alone block. Example: G00 X100 Z100 M99; Note 2: The system alarms when M99 has commanded the block number which does not exist;...

  • Page 157: M Commands Defined By Standard Plc Ladder

    The miscellaneous function commands following the motion commands are executed. Refer to the tool manufacturer’s user manual to selection the method. The second method is executed for GSK’s standard ladder. (3) CNC permits there are up to specified 3 commands in one block (when NO.3404 Bit7 M3B is set to 1), some M commands cannot be specified simultaneously because of machinery operation, such as the spindle’s automatic gear change commands: M41, M43, M44.

  • Page 158: Spindle Override

    GSK988T Turning CNC System User Manual When the spindle speed analog voltage control is valid, there are 2 methods to input the spindle speed: the spindle fixed speed is defined by S command( r/min), and is invariant without changing S command value, which is called constant speed control(G97 modal);...
  • Page 159 Chapter Ⅳ Tool Nose Radius Compensation modify the tool offset according to the dimension offset. Fig.3-5 Tool offset The tool offset is used for the programming. The offset corresponding to the tool offset number in T command is added or subtracted on the end point of each block. X tool offset in diameter or radius is set by No.5004 Bit1(ORC).
  • Page 160 GSK988T Turning CNC System User Manual State of T State of T State of T T0100 T0202 T0303 Coordinates Coordinates Coordinates displaying displaying displaying (Incremental (Incremental (Incremental coordinates) coordinates) coordinates) U: 0.000 U: 12.000 U: 24.560 W: 0.000 W: -23.000 W: 13.452 (Absolute (Absolute...

  • Page 161: Tool Life Management

    Chapter Ⅳ Tool Nose Radius Compensation defined by the motion command. Note 1: In tool traversing compensation mode, when the system executes the tool offset, NO. 5002 Bit6 sets the valid method of the tool offset: LWM=0: it is valid in the block of T code LWM=1: it is valid in the axis movement block Note 2: No.5001 Bit6（EVO）sets the valid method of modifying tool wear tool when the system executes the program:...
  • Page 162 GSK988T Turning CNC System User Manual Specify tool life in used time Specifty the unit of tool life according to FGL (#6805.1) (0: 1m; 1: 0.1s). When the tool group command （T○○９９）is specified, the tool which life does not reach is selected and the tool life management of the selected tool is done.
  • Page 163 Chapter Ⅳ Tool Nose Radius Compensation Example: bit number of imaginary offset number is 2 Select the tool which life has not reached in Group 1 T0199； （imagine that T1001 is selected, the tool number is 10 and ： the offset number is 01.） ：...
  • Page 164 GSK988T Turning CNC System User Manual P- L-； P-：group number T-； L-：tool life value T-； T-：tool number and tool offset number G11：log-in ends P- L-； T-； T-； G11； M02(M30)； The system can set the tool life management data in the unlogged tool life mangagement data group or change the logged tool life management data.

  • Page 165: Chapter Iv Tool Nose Radius Compensation

    Chapter Ⅳ Tool Nose Radius Compensation counting becomes 0, the life counting is valid. Chapter IV Tool Nose Radius Compensation 4.1 Application 4.1.1 Overview Part program is compiled generally for one point of tool according to a workpiece contour. The point is generally regarded as the tool nose A point in an imaginary state (there is no imaginary tool nose point in fact and the tool nose radius can be omitted when using the imaginary tool nose point to program) or as the center point of tool nose arc ( as Fig.

  • Page 166: Imaginary Tool Nose Direction

    GSK988T Turning CNC System User Manual 4.1.2 Imaginary tool nose direction Suppose that it is generally difficult to set the tool nose radius center on the initial position as Fig. 4-3; suppose that it is easily set the tool nose on it as Fig. 4-4; The tool nose radius can be omitted in programming.
  • Page 167 Chapter Ⅳ Tool Nose Radius Compensation direction in cutting. Suppose there are 10（T0～T9） kinds of tool nose setting and 9 directions for position relationship. The tool nose directions are different in different coordinate system (rear tool post coordinate system and front tool post coordinate system) even if they are the same tool nose direction numbers as the following figures.
  • Page 168 GSK988T Turning CNC System User Manual Imaginary tool nose No.7 Imaginary tool nose No. 8 Fig. 4-7 Imaginary tool nose number in rear tool post coordinate system Z axis Front tool post coordinate system X axis Imaginary tool Imaginary tool nose No.2 nose No.

  • Page 169: Compensation Value Setting

    Chapter Ⅳ Tool Nose Radius Compensation Imaginary tool nose No.7 Imaginary tool nose No.8 Fig. 4-8 Imaginary tool nose number in front tool post coordinate system Fig. 4-9 Tool nose center on starting point Note: The general imaginary tool nose direction 1～8 are used to G18 level, the imaginary tool nose 0 or 9 is used to G17 and G19 levels.

  • Page 170: G40/G41/G42 Command Function

    GSK988T Turning CNC System User Manual distances from the standard point to the tool nose radius center than from the standard point to the imaginary tool nose, and so set the tool offset value by measuring distance from the standard point to the imaginary tool nose(tool nose direction of T3).

  • Page 171: Compensation Direction

    Chapter Ⅳ Tool Nose Radius Compensation N1 G42 mode tool nose center moves to A point N2 G40 Xp__ Zp__ I__ K__ tool nose center moves to B point B(X,Z) （I,K） Tool nose radius center path Fig. 4-11 G40 execution process Command explanation: Table 4-2 Commands...
  • Page 172 GSK988T Turning CNC System User Manual Tool G42:Tool is right to G41:Tool is left to workpiece from its workpiece from its movement direction movement direction Workpiece X axis X axis Z axis Z axis Fig. 4-12 Compensation direction of rear coordinate system...

  • Page 173: Cautions

    Chapter Ⅳ Tool Nose Radius Compensation Tool G41:Tool is right to G42:Tool is left to workpiece from its workpiece from its movement direction movement direction Workpiece Z axis Z axis X axis X axis Fig. 4-13 Compensation direction of front coordinate system 4.1.6 Cautions Note 1: In initial state, when the system is in the tool nose radius compensation cancel mode, and the offset compensation number is not 0 in G41 or G42, the system starts creating the tool nose radius...

  • Page 174: Application

    GSK988T Turning CNC System User Manual non-movement command. Note 7: The system does not execute the tool nose radius compensation in G50, G52, G32, G34, G92, G71, G72, G73, G74, G75, G76 and temporarily cancels the compensation mode. Before the system temporarily cancels the compensation execution and when the system modal is G02 or G03, No.262 alarms.

  • Page 175: Tool Nose Radius Compensation Offset Path

    Chapter Ⅳ Tool Nose Radius Compensation G01 Z0 F300; (Start cutting) X16; Z-14 F200; G02 X28 W-6 R6; G01 W-7; X32; Z-35; G40 G00 X90 Z40; (Cancel tool nose radius compensation) G00 X100 Z50 T0100; M30; 4.2 Tool Nose Radius Compensation Offset Path 4.2.1 Inner and outer side Inside is defined that an angle at intersection of two motion blocks is more than or equal to 180°;...
  • Page 176 GSK988T Turning CNC System User Manual (a) Tool traversing inside along corner(α≥180°) Fig.4-16 Linear —linear(starting tool inside) Fig. 4-17 Linear —circular（starting tool inside） (b) Tool traversing inside along corner(180°＞α≥90°) Fig.4-18 Linear —linear(starting tool outside) Fig.4-19 Linear—circular(starting tool outside) (c) Tool traversing inside along corner (α＜90°) Fig.4-20 Linear —linear （...

  • Page 177: Tool Traversing In Offset Mode

    Chapter Ⅳ Tool Nose Radius Compensation (d) Tool traversing inside along corner(α 1°) , linear →linear ≦ Fig. 4-22 Linear—linear（α＜1°, starting tool outside） 4.2.3 Tool traversing in Offset mode Offset mode is called to ones after creating tool nose radius compensation and before canceling Offset path without changing compensation direction in compensation mode (a) Tool traversing inside along corner(α≥180°) Fig.
  • Page 178 GSK988T Turning CNC System User Manual 5）Machining inside (α＜1°) and zoom in the compensation vector Fig. 4-27 Linear —linear（α＜1°, moving inside） (b) Tool traversing outside along corner(180°＞α≥90°) Fig. 4-28 Linear —linear（ moving outside） Fig. 29 Linear—circular（moving outside） Fig. 4-30 circular—linear （ moving outside） Fig. 4- 31 circular—circular （moving outside）...
  • Page 179 Chapter Ⅳ Tool Nose Radius Compensation (c) Tool traversing outside along corner(α＜90°) Fig. 4-32 Linear—Linea（moving outside） Fig. 4-33 Linear—circular（moving outside） Fig.4-34 Circular—linear （ moving outside ） Fig.4-35 Circular—circular （ moving outside ） (d) Special cutting Without intersection ｒ ｒ Fig. 4-36 Paths without intersection after offset...
  • Page 180 GSK988T Turning CNC System User Manual 2）Center point and starting point of circular being the same one Fig. 4-37 Center point and starting point of circular being the same one Offset path of compensation direction in compensation mode The compensation direction of tool nose radius is specified by G41 and G42 and the sign symbol is as follows: Table 4-4 Sign symbol of compensation value...
  • Page 181 Chapter Ⅳ Tool Nose Radius Compensation When the system executes G41 and G42 to change the offset direction between block A and B, a vector perpendicular to block B is created from its starting point. i ) Linear----Linear Fig. 4-42 Linear—linear, no intersection（changing compensation direction） ii ) Linear ---circular Fig.

  • Page 182: Tool Traversing In Offset Canceling Mode

    GSK988T Turning CNC System User Manual 4.2.4 Tool traversing in Offset canceling mode In compensation mode, when the system executes G04, it enters the compensation canceling mode, which is defined to compensation canceling of block. The system cannot execute the circular command(G02 or G03) in canceling tool compensation mode, otherwise the system alarms and stops run.

  • Page 183: Tool Interference Check

    Chapter Ⅳ Tool Nose Radius Compensation (d) Tool traversing outside along corner(α＜1°) ; linear→ linear Fig. 4-51 Linear—linear (α＜1°cutting outside and canceling offset) 4.2.5 Tool interference check “Interference” is defined that the tool cuts workpiece excessively and it can find out excessive cutting in advance, the interference check is executed even if the excessive cutting is not created, but the system cannot find out all tool interferences.
  • Page 184 GSK988T Turning CNC System User Manual (2) Executing it without actual interference 1) Concave groove less than compensation value Fig. 4-54 Executing interference (1) Directions of block B and tool nose radius compensation path are opposite without interference, the tools stops and the system alarms. 2) Concave channel less than compensation value Fig.

  • Page 185: Commands For Canceling Compensation Vector Temporarily

    Chapter Ⅳ Tool Nose Radius Compensation Executed tool nose Tool nose center path center path Programmed path Fig. 4-56 interference vector clear Note 1: NO.5008 Bit 0（CNI）can set whether the interference check is executed in tool nose radius compensation mode. Note 2: NO.5008 Bit 1 （CNC）...
  • Page 186 GSK988T Turning CNC System User Manual Fig. 4-58 Cancel compensation vector temporarily in G28 G53 automatic return to reference position In compensation mode, when G53 is commanded, the system creates the offset vector which is vertical with the tool motion direction before the end point of the last block. When the tool moves to G53 position, the compensation vector is cancelled.
  • Page 187 Chapter Ⅳ Tool Nose Radius Compensation Fig.4-61 cancelling compensation vector in G32, G34 pause G90, G94 Compensation method of tool nose radius compensation in G90 or G94: A. Each cycle path and tool nose center path are parallel to program path. B.

  • Page 188: Particulars

    GSK988T Turning CNC System User Manual Fig. 4-64 G90, G94 radius compensation mode G70 command When G71～G73 is executed, the system temporarily cancels C tool compensation. When G70 is specified again, the system automatically recovers the compensation mode. Because the system executes G71～G73, it does not execute the radius compensation, there must be the finishing allowance in programming to avoid the overcut in roughing.
  • Page 189 Chapter Ⅳ Tool Nose Radius Compensation Fig.4-66 inner corner machining less than tool nose radius Machining concave less than tool nose diameter There is an excessive cutting when the tool nose center path is opposite to program path caused by tool nose radius compensation. At the moment, the tool stops and the system alarms No.257 when starting the previous block or chamfer moving.
  • Page 190 GSK988T Turning CNC System User Manual Fig.4-68 machining an inner sidestep less than 90° Corner motion When two or more than movement vector in the end point of one block create, the tool moves to another vector from the vector linear, which is called the corner motion. When the single block is valid, the tool stops in the last vector.
  • Page 191 Chapter Ⅳ Tool Nose Radius Compensation Fig.4-70 changing compensation value (b) Positive/negative compensation value and tool nose center path When the compensation value is negative (-), G41 and G42 exchange in programming. When the tool center moves along the workpiece outer, it moves along the inner, and vice versa. Note: The compensation value is equal to the offset value adding the wear value.
  • Page 192 GSK988T Turning CNC System User Manual 3. G04 X10 pause 4. G00 only have G code and do not specify the position command 5. G01 U0 the infeed distance is 0 6. G01X100 only specify the absolute value which is same with that of the last block 7.
  • Page 193 Chapter Ⅳ Tool Nose Radius Compensation Cutting inner of the whole circle In the tool nose radius compensation, when the system machines the inner of the whole circle and the compensation direction is not changed, the overcut or undercut creates, at the moment, it determines whether it alarms based on No.5008 Bit5 (CNF).
  • Page 194 GSK988T Turning CNC System User Manual...

  • Page 195: Ⅱ Operation

    Chapter Ⅰ Overview Ⅱ OPERATION...
  • Page 196 GSK988T Turning CNC System User Manual...

  • Page 197: Chapter Ⅰ Overview

    Chapter Ⅰ Overview Chapter Overview Ⅰ 1.1 Operation Overview GSK988T has operation modes including EDIT, AUTO, MDI, REFERENCE POSITION RETURN, MPG/STEP, MANUAL, DNC and so on. Editing a program The above-mentioned operation is completed by the program edit function. The edit program is saved to the memory of the system, and the program can be modified and altered.(see Chapter Ⅴ...

  • Page 198: System Setting

    GSK988T Turning CNC System User Manual Fig.1-2 Manual reference position return The tool traverses to the reference position by the program command, which mode is called the automatic reference position return.( See Programming). MPG feed The tool traverses an distance which corresponds to the rotary angle by rotating the MPG. (See 5.4).

  • Page 199: Display

    Chapter Ⅰ Overview Tool offset setting: each tool has its own dimension (length, diameter) . When a workpiece with some shape is machined, the tool dimension is different according to the amount of movement. If the dimension Value of the tool is set in the CNC, even if the different tools are used, the tool path is also automatically given in the same program, so any tools can machine the workpiece shape specified by the programs.
  • Page 200 GSK988T Turning CNC System User Manual Current coordinate display The coordinate values of each coordinate system display the position where the tool is, and can be taken as the distance display from the current to the target position shown in Fig. 1-6. (See Chapter 3.1 Position Display Window).

  • Page 201: System

    Chapter Ⅰ Overview Fig.1-8 1.4 System 1.4.1 System panel GSK988T system panel adopts 8.4″LCD and its appearance is shown in Fig.1-9:...

  • Page 202: System Key Definitions

    GSK988T Turning CNC System User Manual Fig. 1-9 1.4.2 System key definitions Keys Name Introduction of the function Reset key CNC reset, feeding and output stop, etc Keys address, Input the address, number and symbol, press shift numerical key and take the above address or symbol; Otherwise, take the address below.
  • Page 203 Chapter Ⅰ Overview Keys Name Introduction of the function Switch among keys of double addresses, double symbols, address symbol and numerical address, Shift key firstly press shift key and its indicator is on, and then press address key, input the address above; or select one block with the cursor keys Input the Value of parameter and compensation Input key...

  • Page 204: Machine Operation Panel

    GSK988T Turning CNC System User Manual Keys Name Introduction of the function Press it to switch the system display window. Press it to switch the message display window. Press it to switch the graph display window. Custom window . Press it to switch the help display window.

  • Page 205: State Indicator And Press Key Definition On The Panel

    Chapter Ⅰ Overview Fig.1-10 Note: The operations related to the machine operation panel described in the manual has two types, and when the panel allocated by the user is different from the two, please refer to the attached message. 1.5.2 State indicator and press key definition on the panel The function of keys on GSK988T machine panel is defined by PLC program (ladder diagram), and about the detailed function of each key, refer to the manual of the machine manufacturer.
  • Page 206 GSK988T Turning CNC System User Manual Mode during valid Keys Names Function function The program and MDI command Auto mode, MDI mode Feed hold key running pause and DNC mode The program and MDI command Auto mode, MDI mode Cycle start key running start and DNC mode Auto mode, MDI mode,...
  • Page 207 Chapter Ⅰ Overview Mode during valid Keys Names Function function MPG mode, single step Cooling on/off mode, manual mode and Cooling key DNC mode Auto mode, MDI mode, edit mode, reference position return mode, Chuck key Chuck clamp/release MPG mode, single step mode, manual mode and DNC mode Spindle rotation CCW...
  • Page 208 GSK988T Turning CNC System User Manual Mode during valid Keys Names Function function mode, manual mode and DNC mode When miscellaneous function is Miscellaneous locked, its indicator is on and the Auto mode, MDI mode function lock function of M, S and T output is and DNC mode switch invalid...
  • Page 209 Chapter Ⅰ Overview Mode during valid Keys Names Function function Auto mode, MDI mode, In emergency, the system and edit mode, reference Emergency the machine stop running, all position return mode, stop key output is closed. MPG mode, single step mode and DNC mode Auto mode, MDI mode, edit...

  • Page 210: Power On

    GSK988T Turning CNC System User Manual Chapter Power on, Power off and Safety Protection Ⅱ 2.1 Power on Before GSK988T powers on, they should be confirmed: 1. The machine is normal; 2. The power supply and the voltage comply with the requirements; 3.

  • Page 211: Power Off

    Chapter Ⅱ Power on, power off and safety protection 2.2 Power off Before power off, they should be confirmed: 1. Each axis of CNC stops; 2. The miscellaneous function switches off (such as the spindle and the water pump, etc) 3.
  • Page 212 GSK988T Turning CNC System User Manual When the tool exceeds the travel limit in memory type, it alarms and the tool decelerates and stops. When the tool enters the forbidden area and alarms, the tool can traverse in the opposite direction.

  • Page 213: Emergence Operation

    Chapter Ⅱ Power on, power off and safety protection 2.5 Emergence Operation During the processing, due to the user programming, operation and the product default, etc, some unexpected situations may occur, then, GSK988T should stop working immediately. In this chapter, it mainly introduces the measures taken in emergency. About the machine in emergency, refer to the relative introduction of the machine manufacturer.
  • Page 214 GSK988T Turning CNC System User Manual Chapter Windows Ⅲ Based on the windows, this chapter introduces the relation among the switching windows, input and soft keys and the detailed operation method. There are eight function keys including position, program and setting, etc on MDI panel in GSK988T system, each function key is relative to one main window, and each main window also includes many windows and the soft keys.
  • Page 215 Chapter Ⅲ Windows Note: It can be displayed after U disk is inserted in the U disk catalog.
  • Page 216 GSK988T Turning CNC System User Manual Note 1: The servo parameter is displayed only when the system servo communication function is valid and all servo axes are connected. Note 2: The operations about the file management are valid only when the U disk is inserted.
  • Page 217 Chapter Ⅲ Windows...
  • Page 218 GSK988T Turning CNC System User Manual Note: The servo diagnosis is displayed only when the system servo communication function is valid and all servo axes are connected.

  • Page 219: Position Display Window

    Chapter Ⅲ Windows 3.1 Position Display Window The initial display is the position window after the system is turned on. Fig.3-1 is the position window display diagram without loaded programs in the state of reset in Auto mode. Fig. 3-1 Note: The displayed content is different according to the different allocation, and the diagram form and all content of the related window are based on the standard 2-axis turning machine allocation.

  • Page 220: Absolute Coordinate Window

    GSK988T Turning CNC System User Manual 3.1.1 Absolute coordinate window On the position window, press to switch into the absolute coordinate window. During auto mode and resetting, the window is shown as below. On the top left corner, display the coordinate value of X and Z axes as the absolute position of the current work piece coordinate system which the tool is.

  • Page 221: Relative Coordinate Display

    Chapter Ⅲ Windows MPG override: Current MPG override; Quantity of processing work pieces: The quantity of the processing work pieces pluses one after the program executes M02 or M30 or M codes set by parameter # 6710. Cutting time: Executing time of auto running in one time without the time of stop and feeding pause, timing begins from 0 after auto running starts each time, the units in turn are hour, minute and second;...

  • Page 222: Machine Coordinate Display

    GSK988T Turning CNC System User Manual 3.1.3 Machine coordinate display On the position window, press to switch into the machine coordinate window. The machine coordinate system is set through the reference position. The window is shown as below: Fig.3-5 3.1.4 Comprehensive coordinate In position window, press to switch into the comprehensive coordinate window.

  • Page 223: Setting The Relative Coordinate

    Chapter Ⅲ Windows Fig.3-6 3.1.5 Setting the relative coordinate In position window, press to set the relative coordinate and the window is shown as below. Then, the relative coordinate value of each coordinate axis can be set. The steps are as following: （1）...

  • Page 224: Switching Between The Mode And The Comprehensive Message

    GSK988T Turning CNC System User Manual Fig.3-7 （2）Press to select the coordinate axis to be set, which makes the axis to be input; （3）Input the relative coordinate axis to be set, press to complete setting. （4）Firstly press , and then press to select the other coordinate axes to set the relative coordinate value.

  • Page 225: Clearing Workpiece Count

    Chapter Ⅲ Windows Fig.3-8 3.1.7 Clearing workpiece count In the position window, press to clear the currently machining workpiece count, and the mode display window is shown in Fig.3-9: Fig.3-9 3.1.8 Clearing run time In the position window, press to clear the currently machining workpiece count, and the mode display window is shown in Fig.3-10: Fig.

  • Page 226: Program Window

    GSK988T Turning CNC System User Manual 3.2 Program Window Press to enter the program window including the local directory, MDI program, item/times display, and also the U disk directory is displayed when the U disk is inserted. 3.2.1 Local directory and U disk directory Local directory Press to load, open, copy, paste, create, save as, delete, rename, search and...

  • Page 227: Mdi Program

    Chapter Ⅲ Windows Fig. 3-11 Note: Others related to the program window and its window are referred to the Chapter Ⅵ 3.2.2 MDI program Press to enter the program window, press to display MDI program input box, G, F, S mode, and the executed M command. In MDI working mode, the most 10 lines of the NC program can be input in MDI input box shown in Fig.

  • Page 228: Item/Times

    GSK988T Turning CNC System User Manual 3.2.3 Item/times Press to enter the program window, press to display the current block being executed and the NC command of the next block shown in Fig. 3-13: Fig. 3-13 3.3 System Window Press to access the system window.

  • Page 229: System Parameter Setting And Rewriting Window

    Chapter Ⅲ Windows 3.3.1 System parameter setting and rewriting window On the system window, press to access parameter setting window, which is shown in Fig.3-15: Fig.3-15 3.3.1.1 System parameter window On the system window, press to access the system parameter setting window.
  • Page 230 GSK988T Turning CNC System User Manual above; press , the parameter can be rewritten, parameter #0000 is shown as the following figure: Fig.3-16 Press the numerical key to rewrite the value of 8 bits in binary system, and press confirm the setting is completed; if the value is less than 8 bits, zeroing in upper bit; Moreover, set bit parameter based on the bits;...
  • Page 231 Note 1: After rewrite the system parameter, some parameter can become valid immediately, some parameter becomes valid after the system powers on again, refer to 988T parameter introduction. Note 2: Only in MDI mode, when the parameter switch is on and the operation authority is above level (3), the parameter can be set and rewritten.

  • Page 232: Screw Pitch Compensation Setting And Rewriting Window

    GSK988T Turning CNC System User Manual 3.3.2 Screw pitch compensation setting and rewriting window On the system window, press to access the screw pitch compensation window, which is shown as below: Fig.3-18 On the window, the user can check and set the screw pitch compensation value corresponding to each screw pitch number.

  • Page 233: System Message And Operation Authority Levels

    Chapter Ⅲ Windows 3.3.3 System message and operation authority levels On the system window, press to access the system message window, which is shown as below: Fig.3-19 On the system message display window, it mainly displays the product type, software, hardware and BOOT versions, system serial number, PLC modal and the operation authority.
  • Page 234 GSK988T Turning CNC System User Manual The list of operation function relative with the operation authority levels: Operation Operation authority level function Level Level Level Level Level (Development) (Machine (Equipment (Machine (limited manufacturer) management) operation) operation) System software upgrade Set the limited time of the system auto off program editing,...
  • Page 235 Chapter Ⅲ Windows access the corresponding setting, and input the password corresponding to the operation level, the relative authority is obtained. On the password setting window, the password of the level or lower than the level can be rewritten, and the current password level can be degraded. The operation authority of level 1 isn’t saved after power off, and access level 2 after power on, again.

  • Page 236: System File Management

    GSK988T Turning CNC System User Manual 3.3.4 System file management On the system window, press to access the file management window. The window is shown as below: Fig.3-20 The window is divided into left and right columns. The left column displays the system files and the part program file directories;...

  • Page 237: Ladder Diagram

    Chapter Ⅲ Windows flash disk; After selecting the files in the flash disk, press to input all the selected files in the flash disk to the system file directory. 3.3.5 Ladder diagram Because there are too many windows about the ladder diagram, it is introduced independently, about the ladder diagram windows refer to chapter 3.6.
  • Page 238 GSK988T Turning CNC System User Manual Fig. 3-22 The user can search the ON/OFF of the current contact, the coil in the monitor window, the current value of the timer and the count. The displayed bottom color is blue when the contact and the coil are ON, and it is opposite to the window color when they are OFF.
  • Page 239 Chapter Ⅲ Windows Fig. 3-23 to select the ladder block corresponding to the window. （3）Press to confirm the selection and to return the previous menu, press （4）Press cancel the selection operation and the system return the previous menu. 3. Search parameters, commands and network （1）Search the block windows of the required commands, the parameters and the network ,i.e.
  • Page 240 GSK988T Turning CNC System User Manual corresponding to the corresponding positions. （4）Press to position the HOME and the END of the blocks of the corresponding blocks. , and the system returns the previous menu. （5）Press 4. Return In the figure, press and the system returns to the previous menu.
  • Page 241 Chapter Ⅲ Windows 2. D parameter setting （1） In PLC Value state display window, press to enter D parameter setting display window shown in Fig. 3-26: Fig. 3-26 （ 2 ） Press to select the required D parameter; or press and input the required D parameter, press and the cursor positions to the parameter.
  • Page 242 GSK988T Turning CNC System User Manual 1. DC parameter setting In PLC Value state display window, press to enter DT parameter setting display window shown in Fig. 3-28: Fig. 3.-28 The setting method of DT parameter is the same that of D parameter. 3.3.5.3 PLC state search display In the ladder window, press to enter PLC state display window shown in Fig.

  • Page 243: Setting Window

    Chapter Ⅲ Windows Press to position the cursor to search the parameter position. The search can be done in the whole window, and the parameter name and the parameter name must be input correctly. Press and the window display returns to the previous menu. 3.4 Setting Window Press to access the setting window.
  • Page 244 GSK988T Turning CNC System User Manual Fig.3-31 In the window, the user can search and set the too offset value and the wear value for each axis corresponding to each tool offset number, and the concrete setting methods are referred to Chapter 6.6.
  • Page 245 Chapter Ⅲ Windows Fig. 3-34 Tool explanation column: the first line display the message of the tool where the cursor is. The second displays the definition of tool message color. The user can visually definitions of tool frame with different color. Tool group message column: the first line displays the current tool group message, including current tool group, counting method of tool group, reset value of the tool group, used life of the selected tool in the tool group.
  • Page 246 GSK988T Turning CNC System User Manual Fig. 3-36 Modifying the tool number In MDI mode, move the cursor to the tool number, directly input the tool number to modify, simultaneously clear the tool life of current tool as Fig. 3-37: Fig.

  • Page 247: Cnc Setting Window

    Chapter Ⅲ Windows Fig. 3-38 Searching the tool Press SEARCH button, input the tool number to search the tool as Fig. 3-39. Fig. 3-39 Note 1: The quantity of tool group is determined by No.6813 and No6800#0. When No.6813 value is less than 8, the default is 128 groups.
  • Page 248 GSK988T Turning CNC System User Manual below: Fig.3-40 On the window, it mainly sets on or off of the program and the parameter switches, etc. On the window, press to switch among the program switch, the parameter switch, auto sequence number and the input units, etc; In MDI, when the operation authority is above level (3), press to select on/off and metric /inch system.
  • Page 249 Chapter Ⅲ Windows Fig.3-41 In coordinate setting window, it displays the origin offset value for each axis and the offset value of each coordinate axis in each coordinate system. Set the origin offset value relative to each axis and the offset value of each coordinate axis in each coordinate system. In coordinate setting window, press to select the coordinate system to be set, and press...
  • Page 250 GSK988T Turning CNC System User Manual Parameter #1222: Each axis origin offset value of work piece coordinate system 2 (G55). Parameter #1223: Each axis origin offset value of work piece coordinate system 3 (G56). Parameter #1224: Each axis origin offset value of work piece coordinate system 4 (G57). Parameter #1225: Each axis origin offset value of work piece coordinate system 5 (G58).
  • Page 251 Chapter Ⅲ Windows Stop serial number input: when the system sets the stop function in the limited time, is pressed to input the releasing code to release the stop run. 3.4.2.4 Setting system IP window Press to access the setting window; on CNC setting window, press access system IP setting window, which is shown as below: Fig.3-43 1）Press...

  • Page 252: Macro Variable Window

    GSK988T Turning CNC System User Manual Fig. 3-44 In the page, (see it for the user with more than 2 level authority) can be pressed, i.e. the machine soft panel can be used. The characters lablelled on the machine soft panel corresponds to the characters on the system keyboard, and the machine can be operated according to the corresponding character.

  • Page 253: Message Window

    Chapter Ⅲ Windows Fig.3-45 On the macro variable window, check and set the value relative to each macro variable. On macro variable window, press to select the macro variable to be rewritten, the selected macro variable changes into the green-based color, or press to input the macro variable serial number to be selected, and then press and the cursor positions in the Value of the macro variable.

  • Page 254: Alarm Message Check Window

    GSK988T Turning CNC System User Manual Fig.3-46 3.5.1 Alarm message check window On the message window, press to access the alarm message window, display the quantity CNC and PLC alarms and detailed message. The window is shown in Fig.3-38: Fig.3-47 On alarm message window, the alarm message of CNC and PLC is listed in one window, and...

  • Page 255: Alarm Record Check Window

    Chapter Ⅲ Windows differed through the alarm number. Press to scroll the list line by line, or press to scroll the list page by page. When PLC alarms or prompts, display message of address A in black; When CNC alarms or reminds, the reasons and trouble shooting is shown as black below the message line.

  • Page 256: Diagnosis Window

    GSK988T Turning CNC System User Manual 3.5.3 Diagnosis window Press to access the message window, press to access the diagnosis window. The window is shown as below: Fig.3-49 3.5.3.1 System diagnosis window Firstly access CNC diagnosis window, press to access the system diagnosis window. In CNC system diagnosis window, there is message of keypad and state diagnosis and miscellaneous function parameter, etc.
  • Page 257 Chapter Ⅲ Windows The system can diagnose all keys on the system keyboard, and each key has two states of press-down and jump, they can judge whether the press key is damaged. Feed axis diagnosis messages(diagnosis number: 10~13） The diagnosis number 10~13 is the diagnosis message of the servo axis 1~5. the diagnosis message of each servo axis includes input/output status of servo drive unit connected with the feed axis, pulse quantity from feed axis to FPGA, pulse quantity from FPGA to servo drive unit and the accumulated errors of feed axis’s pulse (difference value between FPGA receiving’s quantity and...
  • Page 258 GSK988T Turning CNC System User Manual Fig.3-41 There provides the following functions in 988T servo diagnosis mode: Through the Value of the servo communication feedback, real-time monitor the system control axis, then, the operator can learn the servo and the motor working state, etc, including: （1）The follow error analysis of the axis, the Value are composed of two parts: The command...

  • Page 259: Oscillograph Window

    Waveform Value Type saved? Trigger Press start/stop soft key A utomatically stops after sampling time ends Memory Press start/stop soft Automatically stop Automatically save when the servo alarms （3） Sampling period. The sampling period of GSK-CAN communication function is within...
  • Page 260 GSK988T Turning CNC System User Manual 60ms, and cannot be modified manually. （4） The other related Value is set and the setting items and the setting content are shown below: Item Explanation Setting step Select the axis from which the Value monitored by the current Press to open the option...
  • Page 261 Chapter Ⅲ Windows Fig. 3-43 In the oscillograph window, press “START” soft key to sample the servo Value. When the sampling Value is 0, the waveform is drawn from the center of the left edge to the right edge in the oscillograph, which path stands 0 separate position of monitor Value, the positive(+) value of the monitor Value is distributed in the upper of 0 separate position, the negative (-) value is under the 0 separate position.

  • Page 262: Gsk-Can Window

    Fig. 3-44 2）Press in GSK-CAN window to switch to the configuration file directory. The files are the ones of the drive unit shown in Fig. 3-45. Deleting the configuration file affects the system run, please do not delete it at will.

  • Page 263: Graph Window

    Chapter Ⅲ Windows Fig. 3-45 Note : The detailed operation about GSK-CAN is referred to GSK988T Installation and Debugging User Manual. 3.6 Graph Window Press to access the graph windows, and it mainly includes the windows of the graph setting, the path display and the simulation graph, etc, and check the content of each window through pressing the corresponding soft keys.

  • Page 264: Processing Graph Path

    GSK988T Turning CNC System User Manual Fig.3-47 On the window, the path and the simulation parameters can be set. Firstly, set the horizontal and vertical axes of the graph, and set the offset of the coordinate axis and the magnification of the graph; if the simulation graph is required, set the simulation horizontal and vertical axes, the length and the diameter of the processing work piece and the magnification of the simulation graph.

  • Page 265: Simulation Graph

    Chapter Ⅲ Windows Fig. 3-48 In the figure, at the bottom of the path screen, it displays the coordinate level of the present path and the scaling of the path graph. In the right column, meanwhile, it displays the current absolute position coordinate and the relative coordinate position value and the tool number used in the currently running program.

  • Page 266: Help Windows

    GSK988T Turning CNC System User Manual Then, the graph can be zoomed in and out and the path can be cleared, and press to move the graph up, down, right or left. Note: The name for each axis is set by parameter #1020, and the name can be set in different letters. 3.7 Help Windows Press to access help window shown in Fig.
  • Page 267 Chapter Ⅲ Windows Fig.3-51 Fig.3-52...

  • Page 268: Chapter Ⅳ Editing And Managing A Program

    GSK988T Turning CNC System User Manual Chapter Ⅳ Editing and Managing a Program On the program window, the program can be created, selected, rewritten, copied and deleted, also imported and exported. To prevent the programs are rewritten and deleted by accident, the program switches are set in GSK988T.

  • Page 269: Executing A Program

    Chapter Ⅳ Editing and Managing Programs （1）Firstly press and then press to access the program windows, which is shown in Fig.4-1: （2） On the program window, press to access the creating window, which is shown in Fig. 4-2: （3）Input the new program name in , for example, input 0123, press to access O0123 program editing window, which is shown in Fig.4-2: Fig.

  • Page 270: Opening A Program

    GSK988T Turning CNC System User Manual Fig.4-3 （3）In reset mode, press , and the selected program is loaded to the block area of the position window, which becomes the current executable program, the display window skips to the position window, at the moment, the system switches to Auto mode, press START, and a program can run.

  • Page 271: Renaming, Outputting, Deleting And Arraying Programs, Saving A Program As

    Chapter Ⅳ Editing and Managing Programs Fig.4-4 Then, the current program can be edited and rewritten, but when the program is being executed, it must be edited in the editing mode. Note: When No.3404.6 is 0, the program must has the end code M02, M30, M99, otherwise, the system prompts the mistakes when is pressed to check the program, and the alarm occurs when a program runs.

  • Page 272: Saving A Program As

    GSK988T Turning CNC System User Manual to rename the selected the program. Input a new program name in the dialog box , press , and the selected program is renamed as the input new program name and the system returns. Press to cancel the rename operation and the system returns to the previous menu.

  • Page 273: Deleting A Program

    Chapter Ⅳ Editing and Managing Programs 4.2.3 Deleting a program （2）In PROGRAM window, press to select the program to be deleted, the selected program is against the green backdrop. to delete the selected program. （3）Press 4.2.4 Outputting a program When the system USB interface has the U disk, the following is shown: Fig.4-7 OUTPUT Press...

  • Page 274: Arraying Programs

    GSK988T Turning CNC System User Manual Note 1: Only when the operation authority is above level [3], can the copying and pasting be executed. Note 2: When the output file is too big and the copy time is too logn, the system displays the processing, and the user can switch the page and does operations in the other pages.

  • Page 275: Rewriting A Program

    Chapter Ⅳ Editing and Managing Programs :pressing the key can cancel the previous step of the program being edited. (cancel up to the last edited 10 steps) . :pressing the key can recover the previously cancelled program. :pressing the key can rapidly position to the specified line exactly. :copy the block where the current cursor is.

  • Page 276: Shortcut Key

    GSK988T Turning CNC System User Manual to move the cursor to the required line to rewrite; press （2）Press to move the cursor the required character to rewrite; also using can find the required block and character to rewrite; （3）Press the address, digital key on the edit keyboard to input the program code to rewrite; （4）Press to delete the previous before the character where the cursor is;...

  • Page 277: Block Comment

    Chapter Ⅳ Editing and Managing Programs Pasting a block; Simultaneously press to past the copied or cut block. 4.4 Block Comment When a block is commented, “EOB” is pressed with “;” behind the block, the content following “;” is the comments. Example: O0001；...

  • Page 278: Chapter Ⅴ Manual Operation

    GSK988T Turning CNC System User Manual Chapter Ⅴ Manual Operation 5.1 Manual Reference Position Return There is a specified point in CNC machine, which can set the position of the machine working table. The specified point is taken as the reference position, in the position, the tool is changed and the coordinate system is set.

  • Page 279: Manual Feed

    Chapter Ⅴ Manual Operation 1. Press and it is one of the mode selecting switches; 2. To decelerate, press one of the rapid traverse override switches 3. Press the feeding axis corresponding to the reference position return and execute the reference position return. The tool traverses to the deceleration point at the rapid traverse speed and then traverse to the reference position at FL speed set by parameter.

  • Page 280: Increment Feeding

    GSK988T Turning CNC System User Manual During the manual operation, many axes can move at the same time. JOG feed steps: 1. Press and it is one of mode selection switches, 2. Press feeding axis and , the machine moves along the corresponding axis in the corresponding direction.

  • Page 281: Mpg Feeding

    Chapter Ⅴ Manual Operation O: Valid ×: Invalid In increment mode, press feeding axis and on the machine panel, the machine moves one step in the selected axial direction. The minimum distance which machine moves is the minimum input increment, and each step can be 1 time, 10 times or 100 times of the minimum input increment.
  • Page 282 GSK988T Turning CNC System User Manual And press to select the movement axis. When MPG rotates one graduation, the minimum distance of the tool traverse is the minimum input increment. When MPG rotates one graduation, the tool traverse distance can be magnified 10 times or one of two overrides is set by parameters #7113 and #7114.
  • Page 283 Chapter Ⅴ Manual Operation Note 4: Quantity of MPG The maximum 2 manual pulse generators can be connected, which is set by parameter #7110. The two generators can operate one selected axis meanwhile.

  • Page 284: Auto Running

    GSK988T Turning CNC System User Manual Chapter Auto Operation Ⅵ 6.1 Auto Running The program should be saved in the memorizer in advance, when one program is selected and is pressed on the machine operation panel, the program automatically runs and the cycle start indicator is on.

  • Page 285: Chapter Ⅵ Auto Operation

    Chapter Ⅵ Auto Operation （3）During resetting, press , the selected program is uploaded into the block area in the position window and it can be executed, the current window switches into the position window, which is shown in Fig.6-2: Fig. 6-2 Note: Only during resetting, the files can be uploaded.

  • Page 286: Running From Any Block

    GSK988T Turning CNC System User Manual When feed hold indicator is on, press on the machine panel, the machine runs, again. 2）Stop the memorizer running Press on MDI panel, auto running ends and resets. Note: The program runs from the line which the cursor is, before is pressed, check whether the cursor is on the block to run.

  • Page 287: G31 Skip

    Chapter Ⅵ Auto Operation The 4 line is skipped when is press to run the program. 6.1.5 G31 skip When G31 is edit before a block, and the external skip signal(X.3.5)is input during the course of G31 being executed, G31 running is interrupted to execute the next block. The function is used to the dynamic measure(such as milling machine) and the toolsetting measure of the workpiece dimension.

  • Page 288: Mdi Running

    GSK988T Turning CNC System User Manual 3. Press emergence stop button During machine running, in the dangerous or the emergency case, press the emergency stop button (the external emergence stop signal is valid), CNC accesses the emergency stop, then the machine running stops immediately, all output is off, such as the spindle revolving and the cooling fluid, etc.

  • Page 289: Running From Any Block

    The run stop in MDI mode is the same that in Auto mode, please refer to Chapter 6.1.4. 6.3 DNC Running 988T is equipped with DNC function, and DNC communication software is connected with CNC, then the program is running in high speed and large capacity.
  • Page 290 GSK988T Turning CNC System User Manual Press on the machine panel, access DNC mode, after PC is ready, press cycle start key and start the program for DNC processing. About the detailed method, refer to the introduction of DNC communication software. 1.
  • Page 291 Chapter Ⅵ Auto Operation Fig.6-6 4. Press , the program automatically starts and the cycle start indicator is on. After automatic running ends, the cycle start indicator is off. Fig.6-7 5. Stop during running Press , the feed hold indicator is on, while the cycle start indicator is off. The machine responds as below: a.

  • Page 292: Auto Running Control

    GSK988T Turning CNC System User Manual b. When the pause (the tool stops running) is being executed, the running stops. c. When functions of M, S and T are executed, running stops after completing the functions of M, S and T. When feed hold indication is on, press on the machine operation panel, the machine runs again.

  • Page 293: Dry Run

    Chapter Ⅵ Auto Operation 6.4.1.1 Machine lock Execute the machine program, but the machine remains still, only the tool position changing situation displays, and then, the machine is locked to check the program. When the machine is locked, the movement of all axes is stopped. Press on the operation panel, the machine is still, but each axis position on the monitor is changing.

  • Page 294: Single Block Running

    GSK988T Turning CNC System User Manual JV: The graduation value of the feedrate override Note 1: The maximum cutting feedrate is set by parameter #1422; Note 2: The rapid traverse speed is set by parameter #1420; Note 3: The dry running speed is set by parameter #1410. Note 4: The dry run speed is set by No.

  • Page 295: Rapid Traverse Override

    Chapter Ⅵ Auto Operation Feedrate override button The override can be specified from 0 to 150%. For some machine, the range is stipulated in the manual. Override of the thread cutting: During the thread cutting, the override is invalid but the feedrate specified by the program is still valid.

  • Page 296: Chapter Ⅶ Tool Offset And Setting Tools

    GSK988T Turning CNC System User Manual Chapter Ⅶ Tool Offset and Setting Tools To simplify the programming, the actual position of the tool isn’t taken into consideration during programming and GSK988T provides the methods of in-position tool-setting and trial cutting, etc, and get the tool offset Value through setting tools.

  • Page 297: Measuring Mode

    Chapter Ⅶ Tool Offset and Setting Tools Fig.7-2 （4） Press to complete the input or rewriting, or switch into the other window to complete the rewriting. （5）Move the cursor to set the other tool offset value, wearing value or T value of the assumed tool nose direction.

  • Page 298: Input Mode

    GSK988T Turning CNC System User Manual Fig.7-3 （4） Input “the coordinate axis number + axis value” to be measured in press for in-position measuring; （5）Calculating the offset value: If the cursor is in the tool offset box, the tool wearing value is cleared, the tool offset value = the relative coordinate value –...

  • Page 299: C Input Method

    Chapter Ⅶ Tool Offset and Setting Tools Fig.7-4 （4）Input one numerical value in , the value can be negative. Press to complete the input; （5）Calculating the offset value: The offset value or the wearing value = the original offset value or the original wearing value + the input numerical value.

  • Page 300: Clearing The Offset Value Or The Wearing Value

    GSK988T Turning CNC System User Manual Fig.7-5 （ 5 ） Input the coordinate axis name to be measured in , press for in-position measuring; （6）Then, calculate the offset value; Press C input button to input the axial number. If the cursor is on the tool offset box, the tool wearing value remains unchanged, write in the tool offset value = the relative coordinate value –...

  • Page 301: Fixed-Point Tool Setting

    Chapter Ⅶ Tool Offset and Setting Tools 7.2 Fixed-Point Tool Setting Fixed-point tool-setting is to set the tool offset Value through C input mode. The steps are as below: Z axis Z axis X axis X axis Fig. 7-6 Fig. 7-7 1.
  • Page 302 GSK988T Turning CNC System User Manual Face B Face A α β Fig.7-8 1. Ensure each axis on the machine has executed the machine zero return; 2. Any tool is selected and the tool offset number is 00(such as T0100, T0300); 3.
  • Page 303 Chapter Ⅶ Tool Offset and Setting Tools Fig.7-9 12. The tool cuts along face A1 as Fig.7-9; 13. When Z axis remains still, the tool retracts along X axis and the spindle stops rotation; measure the distance “β” from face A1 to the origin of the work piece coordinate system; 14.On the setting window, press to access the tool offset management window, and press to select the corresponding tool offset number, and press...

  • Page 304: Position Record

    GSK988T Turning CNC System User Manual 7.4 Position Record The position record key on the machine panel is valid when the parameter PRC (No.5005#2) is set to 1. Position record toolsetting operation mode: 1）Cut the outer or end face in Manual mode. 2）When on the operation panel, the workpiece coordinate values of X (X axis of three basic axes) and Z (Z axis of basic axes) have been recorded to CNC.
  • Page 305 Chapter Ⅶ Tool Offset and Setting Tools commanded measure position at the rapid traverse mode. And, the tool decelerates to stop at the position which is Y from the measured position, and then, traverses to the measure position at the measure speed set by No.6241～6243.

  • Page 306: Chapter Ⅷ Setting And Display Graphs

    GSK988T Turning CNC System User Manual Chapter Ⅷ Setting and Display Graphs 8.1 Setting the Graph Parameter Before display the path, the relative message of the path display or the graphic simulation must be set. The graph message mainly sets the offset value of each coordinate axis, the length and the diameter of the processing work piece, the magnification ratio of the graph path and that of the graph simulation.

  • Page 307: Path Graph Display And Operation

    Chapter Ⅷ Setting and display graphs Chapter （5） Press to select the item to be set and press to confirm the rewriting is completed. （6）Repeat the above operation to set the other parameter. Note 1: The setting on the window is only for the path display and the display on the graph simulation window. Note 2: The path display and the graph simulation are executed based on the machine coordinate.

  • Page 308: Simulation Graph Display And Operation

    GSK988T Turning CNC System User Manual （4）Repetitively press to move the path graph up, down, left or right. Note 1: The name for each axis can be set by parameter #1020, and the name can be set as different letters, and then, at the bottom of the path window, name of each coordinate level and that of the path coordinate change correspondingly.
  • Page 309 Chapter Ⅷ Setting and display graphs Chapter and the simulation graph can be restored as the original size and （2）Press position, and the previous simulation graph message can be cleared. （3） Respectively press , and the simulation graph can move up, down, left or right.

  • Page 310: Sending A Program

    GSK988T Turning CNC System User Manual Chapter U disk Use Ⅸ 9.1 Sending a Program Create a file in the U disk root catalog, and the file is saved as NCPROG. The program required to send is copied to the file. Fig.

  • Page 311: Backup Value

    Chapter Ⅸ U Disk Use 9.2 Backup Value GSK988T system can backup the system files and parameters to U disc to recover them later. 9.2.1 System file backup Backup parameters, tool offset, pitch compensation, tool life, macro variable and other Value by the U disk, which is convenient to recover when the mistaken operations cause the mistaken Value.

  • Page 312: Servo Parameter Backup

    GSK988T Turning CNC System User Manual Note 1: When the parameters are recovered, their switches must be opened, and some parameters cannot recover because of authority. Note 2: Recovering the pitch compensation can be done with the authority more than Level 2. 9.2.2 Servo parameter backup 9.2.2.1 Exporting servo parameters 1.
  • Page 313 Chapter Ⅸ U Disk Use 5. After the Step 3 is done, the file “SERVOPARAM” is created in the U disk, the previous backuped parameter files are saved in the file as Fig. 9-6: Fig. 9-6 9.2.2.2 Importing servo parameters 1.
  • Page 314 GSK988T Turning CNC System User Manual Fig. 9-8 Fig. 9-9 5. Repeat the previous operations, i.e., the parameter files of other axes can be imported to the system. Note 1: After servo parameters of all axes are imported, the machine must be turned on again to use. Note 2: Exporting and importing can be done in MDI mode with the authority more than Level 3.

  • Page 315: Chapter Ⅹ Processing Examples

    Chapter Ⅹ Processing Examples Chapter Processing Examples Ⅹ 10.1 Outer End Face Machining 1）Machining the workpiece is shown in Fig. 10-1 and the rod isΦ50×100mm Fig. 10-1 2）2 tools used to machine below: Tool No. Tool type Remark No. 1 tool Outer tool Cutting tool with the tool width No.2 tool...
  • Page 316 GSK988T Turning CNC system User Manual Change into the 1 tool T0101； Ｎ００３０ Close to the work piece G0 X136 Z2； Ｎ００４０ Cutting depth is 1mm, the tool retracts for Ｎ００５０ G71 U0.5 R0.5 F200； 1mm. G71 P0060 Q0150 U0.25 W0.5； X axis leaves for 0.5mm, 0.5mm surplus in Ｎ００５５...
  • Page 317 Chapter Ⅹ Processing Examples Return to the tool change point G0 X150 Z50； Ｎ０３４０ Change into #1 tool T0100； Ｎ０３５０ The spindle is OFF Ｎ０３６０ M5； The cooling is OFF M9； Ｎ０３７０ Release the chuck M13； Ｎ０３８０ End of a program M30；...

  • Page 318: Compound Machining

    GSK988T Turning CNC system User Manual switched to the tool offset window, the cursor moves to No.001 offset, is pressed and the system enters the measure input window, Z0 in the input window input, and is pressed, and so, Z offset value has been input; (6) Traverse the tool to the safe position, press the tool change key to execute No.2 tool in Manual mode;...
  • Page 319 Chapter Ⅹ Processing Examples Fig.10-5 Tool No. Tool type Remark #1 tool Outer roughing tool #2 tool Outer finishing tool #3 tool Grooving tool, its width is 3mm #4 tool Thread turning tool, the nose angle is 60° 3）Editing a program According to the mechanical processing and introduction of the commands in the manual, set the work piece coordinate system shown as Fig 12-1;...
  • Page 320 GSK988T Turning CNC system User Manual Program name Ｏ０００１； Position to the safe place to change Ｎ００００ G0 X150 Z50； the tool Clamp the chuck Ｎ０００５ M12； The spindle is on, and its speed is 800 M3 S800； Ｎ００１０ The cooling is on M8；...
  • Page 321 Chapter Ⅹ Processing Examples Chamfering G1 X14 Z0 F200； Ｎ０２７０ Return to the tool change point G0 X150 Z50； Ｎ０２８０ Change into #4 tool, set the spindle Ｎ０２９０ T0404 S100； speed as 200 r/min. Close to the work piece G0 X42 Z-54； Ｎ０３００...
  • Page 322 GSK988T Turning CNC system User Manual Fig.10-7 (5) When X axis remains still, the tool is released along Z axis, and the spindle rotation stops, and the outer dimension of the workpiece is measured (the measured value is 135mm); the system is switched to the tool offset window, the cursor moves to No.001 offset, is pressed and the system enters the measure input window, X135 in the input window...
  • Page 323 Chapter Ⅹ Processing Examples Fig.10-9 (11) The system is switched to the tool offset window, and the cursor moves to No.003 offset, X135, Z0 are input, and the input steps are the same those of the above (8); (12) The tool traverses to the safe position, and the tool change key is pressed to execute the No.4 tool in Manual mode;...

  • Page 324: Chapter Ⅺ Parameters

    GSK988T Turning CNC system User Manual Chapter Ⅺ Parameters This chapter mainly introduces CNC state and Value parameters through setting different parameters to realize the different requirements of function. The parameter Value mainly includes the following six types: Data type Range (1) Bit (2) Bit axis...

  • Page 325: Parameters Related To System Setting

    Chapter Ⅺ Parameters 『Default Setting』: 0000 0000 ABCx The introduction of the parameter bit (axis) type is: 0: Allowed 1: Forbidden (2) Word (axis) type: 1000 Parameter name 『Modification authority』: Equipment management authority 『Way of Validating』: After power-on 『Value Range』: 0～999 Explanation information of parameter in word (axis) type 11.1 Parameters Related to System Setting 0000...
  • Page 326 GSK988T Turning CNC system User Manual 1001 『Way of Validating』: After power-on 『Default Setting』: 0000 0000 Least command unit on linear axis: 0: Metric system (metric machine) 1: Inch system (inch machine) 1002 『Default Setting』: 0000 0000 Function setting the reference positon without dog: 0: Disabled 1: Enabled(for all axes) Note: When DLZ is 0, parameter 1005#1 (DLZx) can set valid/invalid for each axis.
  • Page 327 Chapter Ⅺ Parameters 0: Disabled 1: Enabled Note: Parameter DLZ (No.1002#1) is valid when it is “0”. When DLZ (No.1002#1) is “1”, there is no connection with the parameter, and setting the reference position free of the link stopper is valid for all axes.
  • Page 328 GSK988T Turning CNC system User Manual 『Way of Validating』: After power-on 『Parameter Type』: Bit axis 『Default Setting』: 0000 0000 ROAx The roll-over function of a rotation axis is. 0: Invalid 1: Valid Note: ROAx is just valid for the rotary axis and parameter ROTx (No.1006#0) must be 1. RABx In absolute command, the axis rotats in the direction.

  • Page 329: Parameters Related To Coordinate System

    Chapter Ⅺ Parameters 『Value Range』: 0～7 To ensure the levels of the arc interpolation, the tool offset and the tool nose radius, etc. G17: X－Y level G18: Z－X level G19: Y－Z level Set each control axis to be one of three basic axes---X, Y or an axis parallel to the X,Y,Z(. Only one axis of the basic three axes can be set: X, Y and Z;...
  • Page 330 GSK988T Turning CNC system User Manual 0: The direction specified by the external workpiece zero point offset value 1:In the opposite direction to that specified by the external workpiece zero point offset value Shift value of the workpiece coordinate system and external workpiece zero point offset value are 0: stored in the separate memory area 1: stored in the same memory area (the work piece coordinate system movement amount is...

  • Page 331: Parameters Related To The Stroke Detection

    Chapter Ⅺ Parameters 『Value Range』: -99 999 999～+99 999 999 This is one parameter to set the origin location of the work piece coordinate system (G54~G59). The parameter is the valid common offset amount for all the work piece coordinate system. SETTING UNIT IS-B IS-C...
  • Page 332 GSK988T Turning CNC system User Manual Rotary axis 0.001 0.0001 1300 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 Either the inside or outside of the stored stroke check 2 is set as an inhibition area specified by NO.1322, NO.1323 0:Inside 1:Outside The EXLM signal for switching stored stroke check...
  • Page 333 Chapter Ⅺ Parameters #0 OT2X Whether stored stroke check 2 is checked for each axis 0: Stored stroke check 2 is not checked 1: Stored stroke check 2 is checked #1 OT3X Whether stored stroke check 3 is checked for each axis 0: Stored stroke check 3 is not checked 1: Stored stroke check 3 is checked Coordinate value I of stored stroke check 1 in the positive...

  • Page 334: Parameters Related To Feedrate

    GSK988T Turning CNC system User Manual Coordinate value of stored stroke check 3 in the positive direction 1324 on each axis(PC3) Coordinate value of stored stroke check 3 in the negative direction 1325 on each axis(NC3) 『Modification authority』: Equipment management authority 『Parameter Type』: Word axis 『Default Setting』: No.1324 is 99 999 999, No.1325 is －99 999 999 『Value Range』: －99 999 999～99 999 999...
  • Page 335 Chapter Ⅺ Parameters reference position return 0: Disabled(JOG feed is performed) 1: Enabled When cutting feed rate override is 0% during rapid traverse 0:The machine tool doesn't stop moving 1:The machine tool stop moving Dry run during threading or tapping: 0: Enabled 1: Disabled Dry run for rapid traverse:...
  • Page 336 GSK988T Turning CNC system User Manual Inch input inch/min 0.00001～2400 0.00001～960 Rotary axis deg/min 1～60000 1～24000 1410 Dry run rate(DRR) 『Parameter Type』: Word type 『Value Range』: VALID RANGE VALUE DEFAULT SETTING UNITS IS-B UNITS SETTING IS-C Metric machine 1mm/min 6～15000 1000 Inch machine 0.1inch/min...
  • Page 337 Chapter Ⅺ Parameters Metric machine 1 mm/min 30～15000 30～12000 Inch machine 0.1 inch/min 30～6000 30～4800 30～15000 30～12000 Rotary axis 1 deg/min Set the speed when the rapid movement override for each axis is 0. 1422 Maximum cutting feedrate(MFR)for all axes 『Parameter Type』: Word type 『Value Range』: VALUE...

  • Page 338: Parameters Related To Control Of Acceleration And Deceleration

    GSK988T Turning CNC system User Manual 『Value Range』: VALID RANGE DEFAULT SETTING UNITS VALUE UNITS SETTING IS-B IS-C Metric machine 1 mm/min 6～15000 Inch machine 0.1 inch/min Rotary axis 1 deg/min Set FL rate after deceleration when the reference position turn is performed for each axis. 11.7 Parameters Related to Control of Acceleration and Deceleration 1601 『Modification authority』: Equipment management authority...
  • Page 339 Chapter Ⅺ Parameters Set the acceleration and deceleration for each axis cutting and feeding in exponential type, or the time constant of acceleration and deceleration in linear type after interpolation. And the detailed type is set by parameter CTLx (NO.1610#0). If CTLx sets the acceleration and deceleration in linear type after linear interpolation, the maximum time constant of acceleration and deceleration is limited in 512ms and even it exceeds 512ms, it is still dealt as 512ms.

  • Page 340: Parameters Related To Servo And Backlash Compensation

    GSK988T Turning CNC system User Manual axis JOG feeding. 1626 Time constant of acceleration/deceleration in thread cutting cycle(TET)for each axis 『Modification authority』: Equipment management authority 『Parameter Type』: Word axis 『Value Range』: 0～4000ms 『Default Setting』: 100 Set the time constant of acceleration and deceleration in linear and exponential types during each axis thread cutting cycle.
  • Page 341 Chapter Ⅺ Parameters Pulse drive mode select 0: Pulse +direction mode 1: AB phases pulse mode POD Pulse output direction select for each axis 0: Not reverse 1: Reverse 1815 APCx APZx APRx 『Way of Validating』: After power-on 『Parameter Type』: Bit axis 『Default Setting』: 0000 0000 APRx Direction of position on absolute position detector when using absolute...
  • Page 342 GSK988T Turning CNC system User Manual 1820 Command multiplier ratio(CMR)for each axis 『Parameter Type』: Word axis 『Value Range』: COMMAND MULTIPLY VALID RANGE OF DEFAULT RATIO (CMR) VALUE SET BY NO.1820 SETTING 1/2～1/27 102～127 1 ～ 48 2～96 Set the command multiplier (CMR) for each axis. 1.
  • Page 343 Chapter Ⅺ Parameters moves in the direction opposite with that of the reference position return. Detection units are related with parameter No.1820 (command multiplier CMR) and the minimum movement units, about the relations between the setting units and the minimum movement units, refer to parameter No.1820 introduction.

  • Page 344: Parameters Related To Input/Output

    GSK988T Turning CNC system User Manual 2071 Backlash acceleration effective duration(BAT) 『Parameter Type』: Word axis 『Value Range』: 0～100 ms 『Default Setting』: 40 Set backlash acceleration effective duration. 11.9 Parameters Related to Input/Output 3003 『Default Setting』: 1000 0000 ESP alarm signal (X0.5) 0:Alarm when the signal is 0 1:Alarm when the signal is 1 3004...
  • Page 345 Chapter Ⅺ Parameters 3009 DECx 『Parameter Type』: Bit axis 『Default Setting』: 0010 0000 DECx: Deceleration signal of the reference position return 0: decelerate when the signal is 0 1: decelerate when the signal is 1 3010 Time lag in strobe signal MF,TF,SF (MFT) 『Value Range』: 16 ms～32767 ms 『Default Setting』: 16 Set the time required to send strobe signal MF, SF, TF, BF after the M, S, T, B codes are sent(16～...

  • Page 346: Parameters Related To Display And Editing

    GSK988T Turning CNC system User Manual 11.10 Parameters Related to Display and Editing 3101 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 In background editing, a program currently selected in the frontground 0: Can't be selected 1: Can be selected 3102 『Way of Validating』: After power-on 『Default Setting』: 0000 1000...
  • Page 347 Chapter Ⅺ Parameters the tool compensation (the parameter is set as 1). However, the programming position without the tool appearance compensation value can not display. DAC: Absolute position 0:The actual position displayed takes into acount tool nose radius compensation 1:The programed position displayed does not take into acount tool nose radius compensation 3107 『Modification authority』: Equipment management authority...

  • Page 348: Parameters Related To Programming

    GSK988T Turning CNC system User Manual 3202 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 When a NC program is deleted, a confirmation message and soft key are 0:Not output 1:Output 3203 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 MER When the last block of a program has been executed in the MDI mode, the executed block is 0:Not deleted...
  • Page 349 Chapter Ⅺ Parameters The same sequence number is specified twice or more in a program 0:An alarm is issued 1:Not alarm 3402 『Modification authority』: Equipment management authority 『Default Setting』: 0001 0000 Mode entered when the power is turned on or when the control is cleared 0: G00 mode 1: G01 mode When the power is turned on...

  • Page 350: Parameters Related To Screw Pitch Error Compensation

    GSK988T Turning CNC system User Manual 0: Control returns to the head of the program. 1: Control does not return to the head of the program. When M02 is executed in automatic operation 0:Control returns to the head of the program. 1:Control does not return to the head of the program.
  • Page 351 Chapter Ⅺ Parameters 『Parameter Type』: Word axis 『Value Range』: 0～1023 『Default Setting』: 0 The parameter sets the number of the furthest screw pitch error compensation point for each axis in positive direction. The parameter setting value should be greater than that of parameter NO.3620. 3623 Magnification for pitch error compensation (PCM)for each axis 『Way of Validating』: After power-on...
  • Page 352 GSK988T Turning CNC system User Manual minimum movement unit, about the relation between the setting units and the minimum movement units, refer to the introduction of parameter No.1820. 3628 NPF5 NPF4 NPF3 NPF2 NPF1 『Default Setting』: 0000 0111 #0~#4 NPF1～NPF5 The setting of pulse frequency for pitch error compensation (in BCD code).

  • Page 353: Parameters Related To The Spindle Control

    Chapter Ⅺ Parameters 11.13 Parameters Related to the Spindle Control 3700 『Modification authority』: Equipment 『Default Setting』: 0000 0000 The first move command(G00) after the spindle is switched to Cs axis performs 0:Positioning after returning to the reference postion 1:Normal positioning 3705 When the spindle control function is used, S codes and SF are (spindle analog output or spindle serial output)
  • Page 354 GSK988T Turning CNC system User Manual 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 SAR The spindle speed arrival signal is 0: Not checked 1: Checked Check of the spindle speed arrival signal at the start of executing the thread cutting block 0: The signal is checked only when SAR is set 1: The signal is always checked irrespective of whether SAR is set...
  • Page 355 Chapter Ⅺ Parameters 3731 Compensation value for offset voltage of analog output of the spindle speed(CSS) 『Value Range』: -1024～+1024 Set compensation value for offset voltage of analog output of the spindle speed(-1024～ 1024). 1. Set the standard setting value as 0. 2.
  • Page 356 GSK988T Turning CNC system User Manual 『Default Setting』: 0 The parameter sets the minimum spindle speed in the constant surface speed control. During the constant surface speed control (G96) , if the spindle speed is lower than the speed set by the parameter, it is limited in the parameter speed.
  • Page 357 Chapter Ⅺ Parameters 3811 Spindle maximum speed of the 2 spindle gear 1 (M2G1) 3812 Spindle maximum speed of the 2 spindle gear 2 (M2G2) 『Default Setting』: 6000 『Value Range』: 0～32767r/min The parameter sets the maximum speed of each gear in the 2 spindle.

  • Page 358: Parameters Related To The Tool Compensation

    GSK988T Turning CNC system User Manual 3900 Servo axis number to execute the interpolation with Cs contour controlled axis（CSA1） 3910 Servo axis number to execute the interpolation with Cs contour controlled axis（CSA2） 3920 Servo axis number to execute the interpolation with Cs contour controlled axis（CSA3）...
  • Page 359 Chapter Ⅺ Parameters 1: Compensated by the tool movement Tool offset(when LGT=1) 0: Is done in the T code block 1: Is done together with the axis movement Note: When LGT is 0, the offset is executed in T code block, and there isn’t any connection with the parameter.
  • Page 360 GSK988T Turning CNC system User Manual 5008 『Modification authority』: Equipment management authority 『Default Setting』: 0000 0000 Interference check for tool nose radius compensation is 0: Performed 1: Not performed CNC: During interference check of tool nose radius compensation, when the direction of movement after application of offset differs from the programed direction by between 90 and 270 degrees 0: An alarm is issued...

  • Page 361: Parameters Related To The Canned Cycle

    Chapter Ⅺ Parameters 『Default Setting』: 10 『Value Range』: SETTING UNITS IS-B IS-C UNITS Metric input 0.001 0.0001 Inch input 0.0001 0.00001 inch SETTING RANGE IS-B IS-C Metric input 0～9 999 999 0～99 999 999 Inch input The parameter sets Set the maximum allowable tool wear compensation value. When the set absolute value of the tool wearing compensation value exceeds the maximum value, it alarms: Input from MDI……alarm: too many digits.

  • Page 362: Parameters Related To The Thread Cutting Cycle

    GSK988T Turning CNC system User Manual 『Value Range』: 0～99 Set M code, which can lock C axis, in the canned cycle of drilling holes. 11.15.2 Parameters Related to the Thread Cutting Cycle 5130 Chamfering distance in the thread cutting cycles (G76,G92)(THD) 『Modification authority』:Equipment management authority 『Default Setting』: 0 『Value Range』: 0～99×...

  • Page 363: Parameters Related To The Rigid Tapping

    Chapter Ⅺ Parameters Set the partition times of G73 combined canned cycle. 5139 Return in multiple repetitive canned cycle G74,G75(G74G75R) 『Modification authority』:Equipment management authority 『Default Setting』: 0 『Value Range』: 0～99 999 999 Set the reversal value of G74 and G75 combined canned cycle. SETTING UNITS IS-B IS-C...

  • Page 364: Modification Authority』:Equipment Management Authority 『Default Setting

    GSK988T Turning CNC system User Manual 『Default Setting』: 0000 0000 Method for specifying rigid tapping 0: A M code specifying the rigid tapping mode is specified 1: G84/G88 is used to specify rigid tapping mode Rigid mode when a rigid mode cancel command is specified: 0:Cancelled after signal RGTAP(G61.0) is set to 0 1:Cancelled before signal RGTAP(G61.0) is set to 0 Override during extraction in rigid tapping...

  • Page 365: Modification Authority』:Equipment Management Authority 『Default Setting

    Chapter Ⅺ Parameters 『Value Range』: 0～9999 Set the maximum spindle speed in rigid tapping. 5261 The linear acceleration/deceleration time constant for spindle and tapping axis(RTLT) in rigid tapping 『Modification authority』:Equipment management authority 『Default Setting』: 200 『Value Range』: 0～4000ms During the rigid tapping, the time constant of linear acceleration or deceleration of the spindle and the tapping axis is the time (parameter NO.5241) of the spindle maximum speed when the spindle reaches the rigid tapping.

  • Page 366: Parameters Related To The User Macro Program

    GSK988T Turning CNC system User Manual 5462 Maximum cutting feedrate during polar coordienate interpolatoin(MFI) 『Default Setting』: 8000 『Value Range』: IS-B IS-C UNITS 0, 6～24 000 0, 6～10 000 Metric machine mm/min 0, 6～9 600 0, 6～4 800 Inch machine inch/min 0, 6～24 000 0, 6～10 000 Rotary axis...

  • Page 367: Parameters Related To Skip Function

    Chapter Ⅺ Parameters 1:Stops the single block 6001 『Modification authority』:Equipment management authority 『Default Setting』: 0100 0000 CCV Custom macro's common variables Nos.100～199： 0:Cleared to vacant by reset 1:Not cleared by reset Note: In MDI mode, the macro public variables are not cleared after reset. CLV Custom macro's local variables Nos.1～13 0: Cleared to vacant by reset 1: Not cleared by reset...
  • Page 368 GSK988T Turning CNC system User Manual 6240 『Way of Validating』: After power-on 『Default Setting』: 0000 0000 Measurement position arrival is assumed when the automatic tool compensation signal(X3.6) and XAE2(X3.7) is Automatic tool compensation is: 0:Enabled 1:Disabled 6241 Feedrate during measurement of automatic tool compensation(used with signal XAE1) 6242 Feedrate during measurement of automatic tool compensation(used...

  • Page 369: Parameters Related To Graphic Display

    Chapter Ⅺ Parameters input) Linear axis (inch 0.0001 0.00001 inch input) Rotary axis 0.001 0.0001 These two parameters set the ε value in tool compensation function in sequence. Note: The value is set in radius no matter diameter or radius programming is specified 11.20 Parameters Related to Graphic Display 6550 『Modification authority』: Equipment management authority...

  • Page 370: Parameters Related To Mpg Feed

    GSK988T Turning CNC system User Manual When the quantity of the processing parts equals to that of the parts required being processed, the signal PRTSF (F62.7) of the enough quantity of the required parts outputs to PLC. However, if the quantity is 0, it is regarded as infinitely great, not output to PRTSF.

  • Page 371: Parameters Related To Plc Axis Control

    Chapter Ⅺ Parameters 『Value Range』: 1～127 『Default Setting』: 100 Set the magnification when manual handle feed movement selection signal MP1=0,MP2=1 7114 Manual handle feed magnification N(MFN) 『Value Range』: 1～1000 『Default Setting』: 1000 Set the magnification when manual handle feed movement selection signal MP1=1, MP2=1. MOVEMENT VALUE MOVEMENT VALUE (MPG SELECTING SIGNAL...

  • Page 372: Metric Input

    GSK988T Turning CNC system User Manual When a travel command is issued for the PLC-controlled axis according to the program 0: An alarm is issued when PLC controls the axis with an axis control comang.When the PLC does not control the axis,a CNC command is enabled 1: An alarm is issued unconditionally.

  • Page 373: Default Setting

    Chapter Ⅺ Parameters 『Default Setting』: 0000 0000 According to the commands sent by CNC, PLC sends the axis control command after moving along the axis and before receiving the command signal of the miscellaneous function. 0: P/S No.130 alarms 1: The axis is processed as one PLC axis and is executed the set movement. NMT: When PLC is processing one control command of some axis, and CNC sends another command to command the axis, PLC control axis is still 0: P/S No.133 alarms...

  • Page 374: Value Range』: 1～99 999

    GSK988T Turning CNC system User Manual DI/DO in group A is used DI/DO in group B is used DI/DO in group C is used DI/DO in group D is used Upper-limit rate of feed per revolution during PLC axis 8022 control(EPMF) 『Parameter Type』: Word type 『Default Setting』: 6...

  • Page 375: Parameters Related To Gsk-Can Communication Function

    『Default Setting』: 500 (kbps) 『Value Range』; 500, 600, 800 or 1000 (kbps) ABPS Set communication baud rate of GSK-CANA function on system servo. Note: The baud rate set by the servo drive unit parameter should be consistent with the one set by the parameter.
  • Page 376 GSK988T Turning CNC system User Manual 『Default Setting』: 0 SIDx The parameter sets the slave number corresponding to each axis during servo communication. Note: “0” represents the axis doesn’t connect with the servo subunit. “1~5” represent the servo slave number corresponding to each axis. 9012 Slave number corresponding to the extended servo spindle communication（SIDS1）...

  • Page 377: Appendix 1 Alarm List

    Appendix 1 Alarm List Appendix 1 Alarm List 1.1 Program Alarms (P/S Alarms) Message Contents Emergency stop alarm, ESP Recover ESP signal input to clear alarm. input open circuit Part prog. open failure Reset to clear alarm or power-on again. Single block exceeds 256 Characters excessive in single block;...
  • Page 378 GSK988T Turning CNC system User Manual Message Contents of G98/G99. Modify the program. Spindle speed out of range Improper spindle speed or spindle surface speed value, referring to para.3031 SCB. Modify the program. Number followed M code out Specify undefined M code, referring to para.3030 MCB. of range Modify the program.
  • Page 379 Appendix 1 Alarm List Message Contents Chamfering amount Chamfering amount of latitude axis in G92 was greater large of latitude axis in than the distance between start point and end point. threading. Modify the program. Illegal level select In the level selection command, two or more axes in the same direction are selected.
  • Page 380 GSK988T Turning CNC system User Manual Message Contents is excessive or not specified. Modify the program. Illegal offset value G10 In setting an offset amount by G10, the offset value specified by P is excessive or not specified. Modify the program.
  • Page 381 Appendix 1 Alarm List Message Contents control Over-speed of spindle in In threading, the spindle speed specified is too fast for threading the threading axis. Modify the program. Canned cycle cmd in non ZX Canned cycle can't command in non ZX level. Modify level the program.
  • Page 382 GSK988T Turning CNC system User Manual Message Contents allowance along Z axis, referring to para.5102#1 MRC. Modify the program." Start point was on cutting Start point was on cutting path in G71~G73, which may path in G71~G73 cause interfere of tool and workpiece, referring to para. 5104#2 FCK.
  • Page 383 Appendix 1 Alarm List Message Contents Depth of cut in G74 or G75 Depth of cut in X or Z direction in G74 or G75 is out of out of range range. Modify the program. ,X or Z axis increment is 0 in X or Z axis increment is 0 in G76.
  • Page 384 GSK988T Turning CNC system User Manual Message Contents tapping M code block and G84 block. Modify the program. Unallowed M code in rigid In rigid tapping, rigid tapping M code can't be in the tapping same block with M code for Cs-axis clamping in canned cycle for drilling.
  • Page 385 Appendix 1 Alarm List Message Contents Modify the program.. Operand of logical operation Operand of logical operation statement OR,XOR,AND statement error are negative. Modify the program. G67 (custom macro cancel) G67 was commanded while corresponding G66 command was not found. Please check the program whether G66 should be added, and referring to para 6000#1 G67.\nModify the program.

  • Page 386: Parameter Alarms

    GSK988T Turning CNC system User Manual Message Contents Modify the program. Tool group number Tool group number commanded in machining program found is not set. Modify the program or parameter. No space for tool entry The number of tools within one group exceeds the maximum value registerable.

  • Page 387: Pulse Encoder Alarms

    Appendix 1 Alarm List Message Contents Duplicated axis Modify para. No. 1022. attribution were set Duplicated servo control Modify para. No. 1023. No. were set Attribution of rotary axis Para No.1006 and No.1022 conflict, and axis attribution of error rotary axis cannot be 0. Modify para No.1006 or No.1022. 1.3 Pulse Encoder Alarms Message Contents...

  • Page 388: Spindle Alarms

    Please check: Whether communication baud-rate is consistent between CNC and servo(Cnc para. Nos.9010, 9011, & corresponding servo para.) (2)Whether the communication servo-id is consistent GSK-CAN initialization between CNC and servo (Cnc para.Nos.9020, 9030, & failure corresponding servo para.) (3)Whether communication cable is connected well, grounding is abnormal, and the terminal resistance is installed.

  • Page 389: Communication Prompt On The Operation Panel

    Communication on 4200 mistaken. Please check the connection between the panel error them. Edit keyboard input is mistaken. Please restart 4201 Edit keyboard error the system. 1.9 GSK-CAN Communication Prompts Message Contents Possible Reason GSK-CAN slave GSK-CAN extended 5000 configuration Unused at present function unusable.
  • Page 390 GSK988T Turning CNC system User Manual Message Contents Possible Reason conflicted on (cut off the GSK-CAN same. connection before parameter modification at the server side) When GSK-CAN is restarted or re-connected, all the slaves are cut Check setting OFF. The possible reasons are: parameter No.9000-...

  • Page 391: Servo Inner Alarms

    1.10 Servo Inner Alarms Note: (1) n represents the sequence number of GSK-CAN servo slaves set by system parameters (ranges from 1~9). (2) The examples shown in the following table are feed servo V1.03 and spindle V2.02. Previous versions are compatible.
  • Page 392 GSK988T Turning CNC system User Manual power ±15V. 5n11 IPM module fault IPM intelligent module fault 5n12 Overcurrent The current of the motor is excessive. 5n13 Unused 5n14 Braking fault Braking circuit fault 5n15 Unused The heat value of the motor exceeds the setting 5n16 Motor overheat value.
  • Page 393 Appendix 1 Alarm List EEPROM check error in 5n43 absolute encoder 5n44 Coder type error Please check parameter No. PA97. 5n45 Data check error in Data check error in sensor mode. absolute encoder Spindle DAY3025C, DAY3100C, DAP03C Servo (V2.02) Message Contents 5n00 Normal...
  • Page 394 GSK988T Turning CNC system User Manual The parameters are not 5n28 re-adjusted or stored after upgrading The parameter value 5n29 detected after power-on is out of the range 5n30 Communication error The connection between servo and CNC is faulty. 5n31 Unused 5n32 Unused...

  • Page 395: Appendix 2 Standard Ladder Function Allocation

    Appendix 2 Standard Ladder Function Allocation Appendix 2 Standard Ladder Function Allocation 2.1 X, Y Addresses Definition Caution: The general I/O signal (except those signals marked for fixed addresses) in GSK988T CNC system is defined by the embedded PLC (ladder diagram) program. When this CNC system is installed, the exact I/O functions are determined by the machine tool builder.
  • Page 396 GSK988T Turning CNC system User Manual DB Pin PLC address Function defined by standard PLC address Remark Fixed CN61.12 X1.3 DEC3 The 3 axis deceleration signal address CN61.13 X1.4 Reserved CN61.14 X1.5 M41I The 1 gear stage in-position CN61.15 X1.6 M42I The 2 gear stage in-position...
  • Page 397 Appendix 2 Standard Ladder Function Allocation DB Pin PLC address Function defined by standard PLC address Remark CN61.28 X4.7 Reserved CN61.21 ～ CN61.24 CN62.1 Y0.0 Cooling output signal CN62.2 Y0.1 Lubrication output signal CN62.3 Y0.2 Reserved CN62.4 Y0.3 Spindle CCW signal CN62.5 Y0.4 Spindle CW signal...

  • Page 398: Standard Operation Panel

    GSK988T Turning CNC system User Manual DB Pin PLC address Function defined by standard PLC address Remark CN62.41 Y3.4 SORI Spindle orientation signal CN62.42 Y3.5 SEC0 Spindle orientation selection signal 1 CN62.43 Y3.6 SEC1 Spindle orientation selection signal 2 CN62.44 Y3.7 SEC2 Spindle orientation selection signal 3...
  • Page 399 Appendix 2 Standard Ladder Function Allocation X axis moves along – direction (X-)/ X19.7 MPG X X20.0 Protection door X20.1 Tool post forward rotation X20.2 Tool offset X20.3 Tool post reverse rotation X20.4 Cooling X20.5 Spindle stop X20.6 Manual rapid traverse X20.7 Optional stop X21.0...

  • Page 400: Address Y

    GSK988T Turning CNC system User Manual X25.0 ～ X25.7 Connected to terminal strip Reserved for user X26.0 ～ X26.7 Connected to terminal strip Reserved for user X27.0 ～ X27.7 Connected to terminal strip Reserved for user Connected to panel baud switch X28.0 Connected to terminal strip (spindle override OV 1)
  • Page 401 Appendix 2 Standard Ladder Function Allocation Y18.3 Single block indicator Y18.4 Machine lock key indicator Y18.5 Dry run key indicator Y18.6 C/S switch key indicator Y18.7 C/S axis – direction key indicator Y19.0 C axis + direction (C+) key indictor Y19.1 The 4 axis + direction (4...
  • Page 402 GSK988T Turning CNC system User Manual Y23.4 Y axis + direction indicator Y23.5 Rapid traverse override F0 indicator Y23.6 X axis + direction indicator Y23.7 System alarm (ALM) indicator Y24.0 Cooling key indicator Y24.1 Chuck key indicator Indicator of space key on the right of the Y24.2 spindle CCW key Y24.3...

  • Page 403: Standard Plc Parameter Instruction

    Appendix 2 Standard Ladder Function Allocation 2.3 Standard PLC Parameter Instruction 2.3.1 Parameter K Note: K0~K7 do not need to be set. Address Parameter meaning Initial value K8.0 X axis manual movement direction (1: reversed, 0: not reversed) K8.1 Y axis manual movement direction (1: reversed, 0: not reversed) K8.2 Z axis manual movement direction...

  • Page 404: Parameter Dt

    GSK988T Turning CNC system User Manual K13.1 If the chuck function is valid, check the chuck clamping state when the spindle is started (1: Yes, 0: No) K13.2 Tailstock control function (1: valid, 0: invalid) K13.4 Spindle gear stage is stored when power-off (1: Yes, 0: No) K13.5 Spindle automatic gear change in-position signal active level (1: low-level, 0: high-level)

  • Page 405: Parameter Dc

    Appendix 2 Standard Ladder Function Allocation DT0011 60000 Spindle braking output time (ms) DT0012 60000 Spindle jog time (ms) DT0013 60000 Lubricating start time (0-60000ms) (0: no limit) DT0016 60000 Automatic lubricating interval time (ms) DT0017 60000 Automatic lubricating output time (ms) DT0019 1000 60000...

  • Page 406: Plc(Address A) Alarms (The Followings Are Referred To V2.03B)

    GSK988T Turning CNC system User Manual Internal controlled axis number corresponding axis manual movement key (the key is invalid when it is set to 0) Internal controlled axis number corresponding axis manual movement key (the key is invalid when it is set to 0) Internal controlled...
  • Page 407 Appendix 2 Standard Ladder Function Allocation A0001.6 1014 M code undefined A0001.7 1015 Undefined alarm A0002.0 1016 M03, M04 specification error Automatic gear changing is forbidden during spindle A0002.1 1017 rotation. D0 setting error (D0 should be less than or equal to 8 and A0002.2 1018 greater than 0)

  • Page 408: Appendix 3 Installation

    GSK988T Turning CNC system User Manual Appendix 3 Installation 3.1 GSK988T Appearance Dimension Fig. 3-1 GSK988T appearance dimension...

  • Page 409: Machine Operation Panel Mpu02A Of Gsk988T

    Appendix C Installation 3.2 Machine Operation Panel MPU02A of GSK988T C /S Fig. 3-2 Machine operation panel MPU02A appearance dimension...

  • Page 410: Machine Operation Panel Mpu02B Appearance Dimension Of Gsk988T

    GSK988T Turning CNC system User Manual Machine Operation Panel MPU02B Appearance dimension of GSK988T C /S Fig. 3-3 Machine operation panel MPU02B appearance dimension...

  • Page 411: Gsk988T-H Appearance Dimension

    Appendix C Installation 3.4 GSK988T-H Appearance Dimension Note：GSK988T-H is the horizontal GSK988T CNC System. Fig. 3-4 GSK988T—H appearance dimension 3.5 Appearance Dimension of GSK988T-H Operation panel...
  • Page 412 GSK988T Turning CNC system User Manual Fig. 3-5 Horizontal operation panel appearance dimension...

  • Page 413: Appendix 4 Operation List

    Appendix 4 Operation List Operat Param Display Password Program Function Operation -ion -eter Remark window level witch mode switch incremental ,numerical Position coordinate clear value 0, Chapter 3.3.5 incremental Position numerical value 0, coordinate clear 2-level, X tool offset Tool offset Chapter 3-level, clear...
  • Page 414 GSK988T Turning CNC System User Manual Operat Param Display Password Program Function Operation -ion -eter Remark window level witch mode switch 2-level, , line No., Search line 3-level, 4-level 2-level, Search from ,Character, 3-level, home 4-level Search Edit Program Chapter downward mode content...
  • Page 415 Operat Param Display Password Program Function Operation -ion -eter Remark window level witch mode switch The cursor moves to the Edit Program 2-level, Chapter home of a mode content 3-level 4.3.3 file The cursor Edit Program 2-level, Chapter moves to the mode content 3-level...
  • Page 416 GSK988T Turning CNC System User Manual Operat Param Display Password Program Function Operation -ion -eter Remark window level witch mode switch ON： Program 2-level, ON,OFF mode setting 3-level OFF： ON： Parameter 2-level, ON, OFF mode setting 3-level OFF： Chapter 3.4.2.1 Automatic ON：...

Table of Contents

Save PDF