Article Contents
Programmable Work Offset Introduction
The programmable work offset can be used as below in Siemens CNC controller;
- for recurring shapes/arrangements in various positions on the workpiece
- when selecting a new reference point for the dimensioning
- as a stock allowance when roughing
This results in the current workpiece coordinate system. The rewritten dimensions use this as a reference. The offset is possible in all axes.
TRANS and ATRANS Codes Format
| TRANS X… Y… Z… ; programmable offset, deletes old instructions for offsetting, rotation, scaling factor, mirroring |
| ATRANS X… Y… Z… ; programmable offset, additive to existing instructions |
| TRANS ; Without values: Clears old instructions for offset, rotation, scaling factor, mirroring |
The instructions which contain TRANS or ATRANS each require a separate block.
| You may be interested also: |
| “Siemens CNC | MCALL code | Cycle Repeat” |
See the following illustration for the example for programmable offset:
Programmable Work Offset Examples
TRANS CNC Program Example – 1
N20 TRANS X20 Y15 ; Programmable offset
N30 L10 ; Subroutine call; contains the geometry to be offset
N70 TRANS ; Offset cleared
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