Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 4

5.8 Diameter and Radius Programming (G36, G37)...................................................... 64
5.9 Inch/Metric Conversion (G20, G21).........................................................................66
6 Spindle Speed Function........................................................................................................ 67
6.1 Limit of Spindle Speed (G46)...................................................................................68
6.2 Constant Surface Speed Control (G96, G97)............................................................69
7 Tool Function........................................................................................................................71
7.1 Tool Selection and Tool Offset (T code)...................................................................72
7.2 Tool Radius Compensation (G40, G41, G42)...........................................................74
8 Miscellaneous Function........................................................................................................ 76
8.1 M code List...............................................................................................................77
8.2 CNC M-Function...................................................................................................... 78
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.3 PLC M Function....................................................................................................... 81
8.3.1
8.3.2
9 Functions to Simplify Programming.................................................................................... 82
9.1 Canned Cycles.......................................................................................................... 83
9.1.1
9.1.2
9.1.3
9.1.4
9.1.5
9.2 Multiple Repetitive Cycle.........................................................................................98
9.2.1
9.2.2
9.2.3
9.2.4
10 Comprehensive Programming.................................................................................... 114
10.1 Example 1............................................................................................................... 114
10.2 Example 2............................................................................................................... 116
10.3 Example 3............................................................................................................... 118
10.4 Example 4............................................................................................................... 119
11 Custom Macro.................................................................................................................... 120
11.1 Variables................................................................................................................. 121
11.1.1
11.1.2
11.2 Constant.................................................................................................................. 129
11.3 Operators and Expression....................................................................................... 130
11.4 Assignment............................................................................................................. 131
11.5 Selection statement IF, ELSE,ENDIF.....................................................................132
11.6 Repetition Statement WHILE, ENDW................................................................... 133
11.7 Macro Call.............................................................................................................. 134
11.8 Example.................................................................................................................. 136
Program Stop (M00)..................................................................................... 78
Optional Stop (M01).....................................................................................78
End of Program (M02)..................................................................................78
End of Program with return to the beginning of program (M30)................. 78
Subprogram Control (M98, M99).................................................................79
Spindle Control (M03, M04, M05)...............................................................81
Coolant Control (M07, M08, M09).............................................................. 81
Internal Diameter/Outer Diameter Cutting Cycle (G80).............................. 83
End Face Turning Cycle (G81)..................................................................... 88
Thread Cutting Cycle (G82)......................................................................... 91
End Face Peck Drilling Cycle (G74)............................................................ 94
Outer Diameter Grooving Cycle (G75)........................................................ 96
Stock Removal in Turning (G71)..................................................................98
Stock Removal in Facing (G72)................................................................. 104
Pattern Repeating (G73)............................................................................. 108
Multiple Thread Cutting Cycle (G76).........................................................111
Type of Variables........................................................................................ 121
System Variables........................................................................................ 122
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