Tool Length And Plane Change - Siemens SINUMERIK 840D sl Programming Manual

Tool offsets
9.3 Special handling of tool offsets
9.3.4

Tool length and plane change

Function
When setting data SD42940 $SC_TOOL_LENGTH_CONST is set not equal to zero, then
you can assign the tool length components – such as lengths, wear and basic dimension – to
the geometry axes for turning and grinding tools when changing the plane.
SD42940 $SC_TOOL_LENGTH_CONST
Setting data not equal to zero:
The assignment of tool length components (length, wear and tool base dimension) to
geometry axes does not change when the machining plane is changed (
The following table shows the assignment of tool length components to geometry axes for
turning and grinding tools (tool types 400 to 599):
Content
17
*)
19
-17
-18
-19
*)
The following table shows the assignment of tool length components to geometry axes for all
other tools (tool types < 400 or > 599):
Operating plane
*)
18
19
-17
-18
-19
*)
Note
For representation in tables, it is assumed that geometry axes up to 3 are designated with X,
Y, Z. The axis order and not the axis identifier determines the assignment between a
compensation and an axis.
398
Length 1
Y
X
Z
X
Z
Y
Each value not equal to 0, which is not equal to one of the six listed values, is evaluated as value
18.
Length 1
Z
Y
X
Z
Y
X
Each value not equal to 0, which is not equal to one of the six listed values, is evaluated as value
17.
Length 2
X
Z
Y
Y
X
Z
Length 2
Y
X
Z
X
Z
Y
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
- ).
G17 G19
Length 3
Z
Y
X
Z
Y
X
Length 3
X
Z
Y
Y
X
Z
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