Code SPOT-056: Weld Head Not Retracted-Gun1
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Weld Head Not Retracted-Gun1 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Cause: Studwelding gun 1 has not been retracted. Remedy: Press SHIFT-GUN to return the studwelding gun to its retracted position. Reset the fault, then choose the appropriate type of fault recovery. Verify input configuration and status in the Spot Equip I/O screen. Using the teach pendant: 1. Press I/O. 2. Press F1, [TYPE]. 3. Select Spot Equip.
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 SPOT-056 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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