Code PRIO-208: FIPIO NRDY; CMD %d LNG %d
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical FIPIO NRDY; CMD %d LNG %d alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Cause: Bad communication status of FIPIO PC104 Remedy: Check board address of FIPIO PC104 board. The value must be equal to $FIPIOVAR.$IO_ADDRESS that is displayed as decimal number, not hexadecimal. By default, the address is 0x330 (=816 in decimal). If the values are not the same, change $FIPIOVAR.$IO_ADDRESS or address of FIPIO PC104 board to the same value. Next, make sure FIPIO PC104 board and PC104 motherboard are installed correctly. If all of above are correct and this alarm occurs continuously when the robot controller and PLC are properly connected, please contact your local FANUC representative. Note the numeric values displayed with the error. This data will be needed to further diagnose the problem.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code PRIO-208 on the R-30i Series Robot Controller identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 6553 Fanuc R-30i Series Robot Controller codes.
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