Code HOST-112: PANIC: %s
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical PANIC: %s 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 TCP/IP Stack has encountered a situation that may result in corruption or disruption in normal network activity. Remedy: Copy ETHERNET.DG file from MD: and save it. Note the PANIC string. Cycle power to the controller and contact the Support hotline and provide them with that information.
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 HOST-112 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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