Siemens SINUMERIK 840C Installation Instructions Manual page 305

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.6.1 General MD bits (general bits)
NC MD 7
Angle offset for
thread cutting
5185
negative positive
(as from SW 5.7)
Default value: 0
Active: NC Stop
Bit 0
Bit 0 = 1 If a path is traversed in an NC block with G64 and traversing continued in the
next block with G00, the NC generates feedrate reduction with coarse exact
stop at the end of the block.
V
G64
NC generates
"coarse" exact stop
Bit 0 = 0
V
G64
Bit 6 and 7 (should only be used for very slow spindle speeds)
The G92 angle is always calculated in one direction, irrespective of the direction of rotation.
This direction can be set via machine data:
Bit 6=1 Angle G92 A.. always calculated in the positive spindle direction
Bit 7=1 Angle G92 A.. always calculated in the negative spindle direction
Note:
Only one direction can be selected.
Default value: Both bits=0
6–120
Bit No.
6 5 4
G00
S
G00
S
Angle is calculated in the actual direction of rotation.
©
Siemens AG 1992 All Rights Reserved
3 2 1
V
G64 G00
NC generates
"coarse" exact stop
V
G64 G00
SINUMERIK 840C (IA)
09.01
0
Exact stop
on change
from G64 to
G00
S
S
6FC5197- AA50