Mirror Tool Lengths (Sd42900 $Sc_Mirror_Tool_Length) - Siemens SINUMERIK 840D sl Function Manual

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Table of Contents

● SD42935 $SC_WEAR_TRANSFORM (transformation of wear values)

● SD42960 $SC_TOOL_TEMP_COMP (tool length offsets)

Mirror tool lengths (SD42900 $SC_MIRROR_TOOL_LENGTH)

Tool length mirroring is activated via the setting data:

SD42900 $SC_MIRROR_TOOL_LENGTH <> 0 (TRUE) (Sign change tool length when

The following components are mirrored by inverting the sign:

● Tool lengths: $TC_DP3, $TC_DP4, $TC_DP5

● Tool base dimensions: $TC_DP21, $TC_DP22, $TC_DP23

Mirroring is performed for all tool base dimensions whose associated axes are mirrored. Wear

values are not mirrored.

Mirror wear values

The following setting data should be set in order to mirror the wear values:

SD42910 $SC_MIRROR_TOOL_WEAR <> 0 (Sign change tool wear when mirroring)

Inverting the sign mirrors the wear values of the tool length components whose associated

axes are mirrored.

Figure 18-49 Application example: Double-spindle turning machine

Basic Functions

Function Manual, 01/2015, 6FC5397-0BP40-5BA2

18.10 Special handling of tool compensations

W1: Tool offset

Sinumerik 828d Sinumerik 840de sl