Programmable Tool Offset (Toffl, Toff, Toffr) - Siemens SINUMERIK 840D sl Programming Manual

5.8

Programmable tool offset (TOFFL, TOFF, TOFFR)

Function
The user can use the commands TOFFL/TOFF and TOFFR to modify the effective tool length
or the effective tool radius in the NC program, without changing the tool offset data stored in
the compensation memory.
These programmed offsets are deleted again at the end of the program.
Tool length offset
Depending on the type of programming, programmed tool length offsets are assigned either
to the tool length components L1, L2 and L3 (TOFFL) stored in the compensation memory or
to the geometry axes (TOFF). The programmed offsets are treated accordingly for a plane
change (G17/G18/G19 ↔ G17/G18/G19):
• If the offset values are assigned to the tool length components, the directions in which the
programmed offsets apply, are replaced accordingly.
• If the offset values are assigned to the geometry axes, a plane change does not effect the
assignment in relation to the coordinate axes.
Tool radius offset
The command TOFFR is available for the programming of a tool radius offset.
Syntax
Tool length offset:
TOFFL=<value>
TOFFL[1]=<value>
TOFFL[2]=<value>
TOFFL[3]=<value>
TOFF[<geometry axis>]=<value>
Tool radius offset:
TOFFR=<value>
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
5.8 Programmable tool offset (TOFFL, TOFF, TOFFR)
Tool offsets
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