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Movement Control Commands

3.5 Tool offset functions

04.07

3-80

SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition

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

Cutting tool, G40

G41

Example of programming

G41

G01 X... F... ;

G40 X... Y... ;

Fig. 3-21 Canceling the offset mode at inside corner (straight-line to straight-line)

Siemens SINUMERIK 802D sl Programming Manual

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