PS003

Check the MDI history or program line where alarm occurred. Press RESET, then navigate to SYSTEM > ALARM to view alarm history and capture the exact operation that triggered PS003.

Verify parameter 1006 (Input Increment IS-B/IS-C) for each axis under SYSTEM > PARAM > ALL. Standard is 0.001mm (IS-C) or 0.0001mm (IS-D). Coordinate values must not exceed 8 digits before decimal point.

Review the G-code line containing excessive data. Check for missing decimal points (e.g., X100000 instead of X100.000) or erroneous extra digits in X, Y, Z, or other axis commands.

Correct the coordinate value to within acceptable range (typically ±99999999 in machine units based on Bit 0 of parameter 1004). Re-enter command or edit program using EDIT mode.

Ensure work coordinate system offsets (G54-G59) in OFFSET SETTING are not causing accumulated position values to exceed limits.

Navigate to SYSTEM > PARAM and identify which parameter was being modified when PS003 occurred. Note the parameter number and attempted input value.

Parameter write enable must be active (Bit 0 of parameter 3202 = 1). Verify PWE switch on control panel or set parameter 3202.0 = 1.

Reference Fanuc Parameter Manual for specific control series (0i-MF, 31i-B, etc.) to verify valid data range for the parameter. Check maximum allowable digits and sign requirements.

Enter parameter value within valid range. For multi-axis parameters (e.g., 1825 servo gain), ensure each axis entry is valid. Common valid ranges: 0-32767 for 2-byte parameters, -99999999 to +99999999 for 4-byte parameters.

After correction, press INPUT key to write parameter. Cycle power (control OFF/ON) if parameter requires reboot per parameter manual PWE column indication.

Backup all parameters to memory card via SYSTEM > PMC > I/O > CARD before making changes.

Check the program line with F or S command. Navigate to EDIT > PROGRAM and search for feedrate or spindle speed values exceeding typical ranges (F99999 mm/min or S99999 rpm).

Verify parameter 1430 (Maximum Cutting Feedrate) and 1432 (Rapid Traverse Rate) under SYSTEM > PARAM. Ensure programmed F values do not exceed these limits. Check parameter 3741/3742 for max spindle speed limits.

Correct F or S values in program. For mm/min systems, typical max is F50000. For inch/min, typical max is F2000. Spindle speed typically limited to S99999 depending on machine specifications.

If using G98/G99 canned cycles, verify Q (peck depth) and R (return point) values are not excessive. These also subject to 8-digit coordinate limits per parameter 1006 settings.

Check for missing decimal points in feed commands (e.g., F1000000 instead of F1000.0) causing apparent overflow.