Code SRVO-223: DSP dry run (%d,%d)
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical DSP dry run (%d,%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: A servo DSP initialization failure occurred and the software entered DSP dry run mode. The first number indicates the cause of the failure. The second number is extra information. Remedy: Perform an action according to the first number that is displayed in the alarm message. 1: This is a warning due to $scr.$startup_cnd=12. 2,3,4,7: Replace a servo card. 5,6: Invalid ATR setting. Specified hardware start axis might be wrong. 8,10: FSSB init error occurs simultaneously. Follow the remedy of FSSB init error. 9: There is no amplifier that is connected to the servo card. Check the hardware connection and optical fiber cable. 11: Invalid axisorder setting. Non-existing axis number is specified. Hardware start axis may be wrong or auxiliary axis board is necessary. 12: Servo amp init error occurs simultaneously. Follow the remedy of servo amp init error.
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-223 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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