Tool Length And Plane Change (Sd42940 $Sc_Tool_Length_Const) - Siemens SINUMERIK 840D sl Function Manual

Detailed Description
2.8 Special handling of tool compensations
Activation of modified setting data
When the setting data described above are modified, the tool components are not
reevaluated until the next time a tool edge is selected. If a tool is already active and the data
of this tool are to be reevaluated, the tool must be selected again.
Example:
N10 $SC_WEAR_SIGN = 0
N20 $TC_DP1[1,1] = 120
N30 $TC_DP6[1,1] = 100
N40 $TC_DP15[1,1] = 1
N100 T1 D1 G41 X150 Y20
....
N150 G40 X300N10
....
N200 $SC_WEAR_SIGN = 1
N300 D1 G41 X350 Y-20
N310 ....
The same applies in the event that the resulting tool length is modified due to a change in
the mirroring status of an axis. The tool must be selected again after the mirror command, in
order to activate the modified tool-length components.
2.8.4

Tool length and plane change (SD42940 $SC_TOOL_LENGTH_CONST)

Plane change
The assignment of tool length components (length, wear and tool base dimension) to
geometry axes does not change when the machining plane is changed (G17–G19).
136
; No sign inversion of the wear values
; End mill
; Tool radius 100 mm
; Wear dimension of tool radius 1 mm, resulting tool
radius 101 mm
; Sign inversion for all wear values; the new radius of 99
mm is activated on a new selection (D1). Without D1,
the radius would continue to be 101 mm.
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0