035

Press PRGRM key and verify the called program number exists in memory. Search for the exact Oxxxx number referenced in the M98 or G65 call using the program directory list.

If program is missing, transfer the correct subprogram from external device (RS232, USB, CF card, or network) using appropriate I/O settings. Verify Parameters 20 (I/O channel), 100-102 (baud rate and settings) if using serial transfer.

Check available program memory capacity at SYSTEM > CURRENT screen. If memory is full (near 100%), delete unused programs or upgrade memory capacity. Parameter 3107#0 may need setting for expanded program memory on some control series.

Verify program registration by running the subprogram independently in MEM mode to confirm it executes without alarm before calling it from main program.

Verify the calling syntax in main program matches Fanuc format: M98 P[program number] for simple calls, or M98 P[program number] L[repeat count]. Ensure P-address matches exact Oxxxx number without the O prefix (e.g., M98 P1234 calls O1234).

Check for leading zero discrepancies. If calling M98 P0100 but program is stored as O100 (without leading zeros), add leading zeros to program name or remove from call. Parameter 3204#3 (O8D) controls 8-digit program number format on newer controls.

For macro calls using G65, verify P-address specifies a valid macro program number (typically O9xxx range). Check Parameter 6001-6010 for user macro program number registration if using fixed macro calls.

If using external program call M198, verify Parameter 3107#4 (EXT) is set to 1 to enable external subprogram function and the device path is correctly specified in the P-address.

External program calls require proper I/O device setup and may have different format requirements than internal calls.

Check Parameter 3107#5 (PGN) which enables program number range limitation. If set, verify Parameters 3108 (minimum program number) and 3109 (maximum program number) include the called subprogram number within the allowed range.

Verify program protection status at SYSTEM > PMC > PRGRM PROTECT screen. If subprogram is read-protected or hidden, disable protection using key switch position and Parameter 3202#5 (PROTECT) settings.

Modifying protection parameters requires appropriate access level and key switch position. Record original settings before changes.

On 30i/31i/32i series with program folder management, confirm the called subprogram is in the same folder as the calling program or in the root directory. Navigate PRGRM > FOLDER to check program location and move if necessary.