Code SRVO-316: MPDT time is up(G:%d A:%d)
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical MPDT time is up(G:%d A:%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: Magnetic Phase Detection (MPDT) process time is up. Probable cause: 1. The axis fell down because of gravity during performing of MPDT. 2. Other alarms occurred during performing of MPDT. Remedy: 1. MPDT cannot be applied for gravity axis. If possible, change the posture. 2. Remove the reason of other alarm which occurred at the same time.
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-316 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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