Siemens Sinumerik 802D sl Programming Manual page 93

04.07
The sign of address R is determined by the direction viewing point A' from point B.
Example of programming
N20 G00 X87. Z72. ;
N21 G90 X85. W–42. R–10.5 F0.25 ;
N22 X80. ;
N23 X75. ;
N24 X70. ;
N25 G00 ⋅⋅⋅;
Fig. 4-4
S If the G77 (G90, G20) cycle is executed with the single block function ON, the
cycle is not interrupted halfway but it stops after the completion of the cycle con-
sisting of sequence 1 to 4.
S The S, T, and M functions that are used as the cutting conditions for the execu-
tion of the G77 (G90, G20) cycle should be specified in blocks preceding the
G77 (G90, G20) block. However, if these functions are specified in a block inde-
pendently without axis movement commands, such designation is valid if the
block is specified in the G77 (G90, G20) mode range.
G77
G00
G77
G00
The G77 (G90, G20) mode is valid up to the block immediately before the one in
which a G code of 01 group is specified.
Thread cutting cycle command
For thread cutting operations, four kinds of thread cutting cycles are provided –
two kinds of straight thread cutting cycles and two kinds of tapered thread cutting
cycles.
© SIEMENS AG 2007 All rights reserved
SINUMERIK 802D sl/840D sl840D/840Di sl/840Di/810D ISO Turning -- 04.07 Edition
+X
30
∅80.
∅70.
Taper cutting cycle (G code system A)
X ⋅⋅⋅ Z ⋅⋅⋅ R ⋅⋅⋅ F ⋅⋅⋅ ;
X ⋅⋅⋅ ;
X ⋅⋅⋅ ;
X ⋅⋅⋅ T0505 M05 ; ← Error
X ⋅⋅⋅ Z ⋅⋅⋅ ;
X ⋅⋅⋅ Z ⋅⋅⋅ R ⋅⋅⋅ F ⋅⋅⋅ ;
X ⋅⋅⋅ ;
X ⋅⋅⋅ ;
X ⋅⋅⋅⋅ T0505 M05 ; ← Correct
X ⋅⋅⋅ Z ⋅⋅⋅ ;
Enhanced Level Commands
4.1 Program support functions (1)
10.
2.
∅50.
40. ∅87.
G77 valid range
G77 valid range
+Z
4-93