Siemens SINUMERIK 840Di sl - 6.9.10 Enabling

Tool offsets
8.8 Tool radius compensation (G40, G41, G42)
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
353
Changing the offset number D
The offset number D can be changed in compensation mode.
A modified tool radius is active with effect from the block, in which the new D number is
programmed.
Caution
The radius change or compensation movement is performed across the entire block and only
reaches the new equidistance at the programmed end point.
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With linear movements, the tool travels along an inclined path between the starting point and
end point; with circular interpolation spiral movements are produced.
Changing the tool radius
This can be achieved, for example, using system variables. The execution is the same as for
changes in the D number.
Caution
The modified values only take effect the next time T or D is programmed. The change only
applies with effect from the next block.