1014

Navigate to EDIT mode and display the program where the alarm occurred. Press RESET to clear the alarm and check the alarm history (ALARM > HISTORY) to identify the program number if displayed.

Search for O-code addresses at the beginning of the program. Verify format is O#### (e.g., O1234) with no spaces, letters, or special characters between O and the number. Check parameter 3107#0 (8-digit program number) to confirm valid range: 1-9999 if #0=0, or 1-99999999 if #0=1.

Check for orphaned O addresses or O codes with spaces before the number (e.g., 'O 1234' or 'O' on a separate line). Remove spaces and ensure the number immediately follows the O address.

If program was transferred via DNC or USB, verify file encoding is ASCII and check for hidden characters using LIST display on the control (PRGRM > LIST). Re-transfer program if corruption is suspected.

Check parameter 0000#0 (TV check) is set correctly for your system to prevent format errors during program input.

In EDIT mode, search for all N-codes in the program using the word search function (press ADDRESS key > N > SEARCH DOWN). Examine each N address to verify it is immediately followed by a number with no spaces.

Verify sequence numbers are within valid range: 1-99999 for standard Fanuc controls. Check for orphaned N characters without numbers or with special characters (e.g., 'N', 'N-100', 'NA123').

Check parameter 3216 (sequence number output format) to ensure sequence numbers match the expected format. If sequence numbers are not required, remove all N-codes or ensure complete format throughout program.

If using optional block skip with slash codes, verify format is /N#### not N/#### or other variations. The slash must precede the N address.

Sequence number format errors may not appear until the specific block is executed or during background search operations.

Navigate to SYSTEM > DIAGNOSIS screen and check diagnosis number 300 (memory error detection). If non-zero value appears, battery backup or SRAM issues may exist requiring system backup and potential memory replacement.

Always perform full backup via SYSTEM > FILE > BACKUP before investigating memory-related issues.

Delete the suspect program and re-transfer from original source using verified communication settings. Check parameters 0020 (I/O channel), 0101-0103 (baud rate, stop bits, parity) match exactly with sending device.

If using RS-232 transfer, verify parameter 0000#0 (TV check/ISO code) matches your program format: #0=0 for EIA code, #0=1 for ISO code. Mismatch causes character misinterpretation.

Review CAM post-processor output if program was newly generated. Verify post-processor is configured for correct Fanuc control series and does not insert non-standard formatting for O or N codes.

Contact machine tool builder or CAM vendor for certified post-processors specific to your control model (0i, 30i, 31i, 32i).