Programming principles
1.6 Tool and tool offset
Turning Part 2: Programming (Siemens instructions)
Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
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1.6.9 Special handling of tool compensation (turning)
Influence of setting data
With the use of the following setting data, the operator / programmer can influence the
calculation of the length compensation of the tool used:
● SD 42940: TOOL_LENGTH_CONST
(Assignment of tool-length components to geometry axes)
● SD 42950: TOOL_LENGTH_TYPE
(Assignment of the tool-length components independent of tool type)
Note
The modified setting data will become effective with the next cutting edge selection.
Examples
With SD 42950: TOOL_LENGTH_TYPE =2
a milling tool used is taken into account in length compensation as a turning tool:
● G17: Length 1 in Y axis, length 2 in X axis
● G18: Length 1 in X axis, length 2 in Z axis
● G19: Length 1 in Z axis, length 2 in Y axis
With SD 42940: TOOL_LENGTH_CONST =18
the length assignment is performed in all planes G17 to G19 as for G18:
● Length 1 in X axis, length 2 in Z axis
Setting data in the program
In addition to setting of setting data via operator input, these can also be written in the
program.
Programming example
N10 $MC_TOOL_LENGTH_TYPE=2
N20 $MC_TOOL_LENGTH_CONST=18
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