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FANUC Controller
Program/G-code · Intermediate · 5-30 minutes
Fanuc 296 - Figure copy parameter error
Alarm 296 occurs when the Figure Copy function (a Fanuc macro-based feature for duplicating geometric patterns) encounters invalid parameters or syntax errors. This is typically caused by incorrect parameter values, missing required arguments, out-of-range coordinates, or incompatible geometric definitions in the figure copy command sequence.
296
Fanuc 296 - Figure copy parameter error
FIGURE COPY PARAMETER ERROR
Fanuc PS program alarm 296: FIGURE COPY PARAMETER 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 296 occurs when the Figure Copy function (a Fanuc macro-based feature for duplicating geometric patterns) encounters invalid parameters or syntax errors. This is typically caused by incorrect parameter values, missing required arguments, out-of-range coordinates, or incompatible geometric definitions in the figure copy command sequence.
Safety
- Verify corrected program or parameters before resuming machining
Causes and Fixes
- 1
Review the program line number shown with the alarm and locate the figure copy macro call (typically G65 or G66 with specific P-code).
- 2
Verify all parameter values: check that copy count is positive integer, scale factors are non-zero, rotation angles are within 0-360 degrees, and increment values are logical.
- 3
Calculate the final positions of all copied figures to ensure they remain within machine travel limits and do not exceed work coordinate boundaries.
- 4
Correct any invalid parameters, test with reduced values first (smaller count or scale), then gradually increase to desired pattern.
Always verify calculated endpoints do not exceed physical machine limits to prevent crashes.
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