Siemens SINUMERIK 802D sl Programming Manual page 80

Movement Control Commands
3.5 Tool offset functions
Canceling the offset mode
There are two types of offset mode cancellation methods which can be selected by
the MD setting.
1. Type A:
Offset mode cancellation movement is not executed in the G40 block if no axis
move commands are given. The offset mode is canceled by the first axis move
command given in a block specified following the G40 block. Axis move commands
should be specified with G40 in the same block.
2. Type B:
Offset mode cancellation movement is executed in the G40 block even if there are
no axis move commands given. The cutting tool moves normally to the offset posi-
tion at the end point of the block immediately before the G40 block. Since G40
calls up offset mode cancellation axis movements, it must be specified in the G00
or G01 mode. If it is specified in a mode other than G00 or G01, an alarm occurs.
Canceling the offset mode at inside corner (smaller than 180_)
Straight-line to straight-line
Example of programming
G41
·
·
·
G01 X... F... ;
G40 X... Y... ;
Fig. 3-21
3-80
Y
Canceling the offset mode at inside corner (straight-line to straight-line)
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) - - 04.07 Edition
Cutting tool, G40
G41
S
X
© Siemens AG 2007 All rights reserved
04.07