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Movement Control Commands

3.5 Tool offset functions

04.07

3-78

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

Blocks not including axis move commands in the offset mode

In the tool radius offset mode, the NC generates the tool paths by buffering the

data of two blocks. If a block not including axis move commands is read, the NC

reads one more block to generate the offset tool paths. Designation of such a block

which does not include axis move commands is allowed in the tool radius offset

mode for up to two consecutive blocks.

After the designation of G41, there must not be three or more consecutive blocks

that do not include the movement commands of the axes in the offset plane.

Consecutive three or more blocks not including axis move commands

If three or more blocks not containing axis move commands in the offset plane are

given consecutively, the cutting tool is moved to the position offset normally by the

specified offset amount at the end point of the block immediately preceding such

blocks.

Example of programming

G17 G01 G41 X ...Y... D... F... ;

X... Y... ;

G04 P1000 ;

X... Y... ;

Z... ;

X... Y... ;

G40 X... Y... ;

Blocks not including axis movement

commands in the offset plane

(If such blocks continue up to two

blocks, the NC can generate tool

paths without a problem.)

Fig. 3-19 Example of programming

Siemens SINUMERIK 802D sl Programming Manual

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