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FANUC Controller
Program/G-code · Intermediate · 30-60 minutes
Fanuc Alarm 5232 - DATA OVERFLOW
Fanuc alarm 5232 DATA OVERFLOW occurs when numerical data in the program exceeds the allowable range during calculation or when dimensional values exceed system limits. This typically happens with coordinate values, feed rates, or arithmetic operations that produce results beyond the CNC's processing capacity or parameter-defined boundaries.
5232
Fanuc Alarm 5232 - DATA OVERFLOW
SYSTEM ALARM 5232
Fanuc alarm 5232: SYSTEM ALARM 5232. This alarm indicates a fault condition detected by the Fanuc control. Refer to the alarm number and name to identify the specific system or function involved.
Root Cause Summary
Fanuc alarm 5232 DATA OVERFLOW occurs when numerical data in the program exceeds the allowable range during calculation or when dimensional values exceed system limits. This typically happens with coordinate values, feed rates, or arithmetic operations that produce results beyond the CNC's processing capacity or parameter-defined boundaries.
Causes and Fixes
- 1
Navigate to SYSTEM > PARAM and verify Parameters 1320 (negative limit) and 1321 (positive limit) for each axis. Check that programmed coordinates fall within these ranges.
- 2
Review the NC program at the line where alarm occurred. Check for missing decimal points (e.g., X10000 instead of X100.00) or excessive incremental moves in G91 mode that accumulate beyond travel limits.
- 3
Check Parameter 1006 bit 0 (ISE) - Input Setting Error detection. If set to 1, the system strictly monitors data range. Verify programmed values are within ±99999.999 for linear axes.
- 4
If using work coordinate systems (G54-G59), navigate to POSITION > OFFSET and verify work coordinate offsets combined with programmed positions do not exceed absolute machine limits.
Call a technician if:
- ·Parameter corruption suspected
- ·Memory hardware failure indicated
- ·Alarm persists after program corrections
Prevention
- Validate program coordinates against machine travel limits before loading
- Use CAM post-processor limits matching machine parameters
- Regularly backup system parameters
- Monitor program memory usage and maintain 20% free space
Common Mistakes
- Ignoring decimal points in coordinate programming
- Not checking work coordinate offsets when troubleshooting
- Assuming all FANUC systems have identical parameter limits
- Forgetting to account for tool length offsets in Z-axis calculations
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