Code PRIO-160: CNET Connections Broken Bd %d
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical CNET Connections Broken Bd %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: All connections to the card are broken. No I/O is exchanged and all ports are Offline. This happens when a network configuration is being performed or the Scan list is being changed. Remedy: Finish the change. When the network is completed, the connections will be restored. If scan list is changed, the power will have cycled for the interface to the restarted.
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-160 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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