Code PMON-001: Failed to notify PC Monitor
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Failed to notify PC Monitor 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: The PC Monitor task could not be notified. 4.ERROR CODES B-83124EN-6/02 Remedy: Refer to the associated error code. OS -012 System error This error may be seen when attempting to monitor a variable or I/O point using the .StartMonitor method. It occurs when you have performed a restore from a controller that did not have the PCIF option installed. To fix this error, set system variable $SCR.$LPCOND_TIME to 40 and cycle power. This variable is set to zero on controllers that do not have the PCIF option installed. When set to zero, the task that performs monitoring is not started on power up.
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 PMON-001 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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