Code SRVO-063: RCAL alarm(Group:%d Axis:%d)
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical RCAL alarm(Group:%d Axis:%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: The built-in rotation counter on the pulse coder is abnormal. Remedy: 1. Eliminate the cause of the alarm. Set the system variable $MCR.$SPC_RESET to TRUE, and turn the power off and then on again. Master the robot. 2. Replace the pulse coder. Master the robot. NOTE: The RCAL alarm might be displayed when any of the
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 SRVO-063 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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