G254 - Dynamic Work Offset (DWO) (Group 23)
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These key presses and program codes will cancel G254:
•[EMERGENCY STOP]
•[RESET]
•[HANDLE JOG]
•[LIST PROGRAM]
• G255 – Cancel DWO
• M02 – Program End
• M30 – Program End and Reset
These codes will NOT cancel G254:
• M00 – Program Stop
• M01 – Optional Stop
Some codes ignore G254. These codes will not apply rotational deltas:
• *G28 – Return to Machine Zero Through Optional Reference Point
• *G29 – Move to Location Through G29 Reference Point
• G53 – Non-Modal Machine Coordinate Selection
• M06 – Tool Change
*It is strongly recommended that you not use G28 or G29 while G254 is active, nor when
the B and C Axes are not at zero.
1. G254 (DWO) is intended for 3+1 and 3+2 machining, where the B and C Axes are
used to position only.
2. An active work offset (G54, G55, etc.) must be applied before G254 is commanded.
3. All rotary motion must be complete before G254 is commanded.
4. After G254 is invoked, you must specify an X-, Y-, and Z-Axis position prior to any
cutting command, even if it recalls the current position. It is recommended to specify
the X and Y Axes in one block, and the Z Axis in a separate block.
5. Cancel G254 with G255 immediately after use and before ANY rotary motion.
6. Cancel G254 with G255 any time simultaneous 4- or 5-axis machining is performed.
7. Cancel G254 with G255 and retract the cutting tool to a safe location before the
workpiece is repositioned.
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