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FANUC Controller
Program/G-code · Intermediate · 5-30 minutes
Fanuc 374 - Coordinate rotation data error
Alarm 374 occurs when the control detects invalid data in a coordinate rotation command (G68/G68.2). The most common causes are attempting to rotate around an axis that doesn't exist in the current plane, specifying an invalid rotation center, or using incompatible parameters with the rotation command.
374
Fanuc 374 - Coordinate rotation data error
COORDINATE ROTATION DATA ERROR
Fanuc PS program alarm 374: COORDINATE ROTATION DATA ERROR. This alarm is triggered by an illegal or incorrectly formatted command in the part program, or a programming condition that the Fanuc control cannot execute.
Root Cause Summary
Alarm 374 occurs when the control detects invalid data in a coordinate rotation command (G68/G68.2). The most common causes are attempting to rotate around an axis that doesn't exist in the current plane, specifying an invalid rotation center, or using incompatible parameters with the rotation command.
Safety
- Verify corrected program or parameters before resuming machining
Causes and Fixes
- 1
Locate the G68 or G68.2 command in the program at the alarm line number.
- 2
Verify the rotation center coordinates (I, J, K) are properly specified for the active plane (G17=XY uses I,J; G18=ZX uses K,I; G19=YZ uses J,K).
- 3
Confirm the R parameter (rotation angle) is present and contains a valid numerical value.
- 4
Ensure all coordinate values are defined and not referencing empty variables or macro values that are undefined.
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