Code DTBR-002: RPC Call timed out
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical RPC Call timed out 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: Communication with specified host failed or took time and timeout happened. Remedy: Please make sure network is working properly and stably. PING should always work for specified remote host. If there is heavy traffic, please reduce it. Hardware problem like cable disconnection can cause this error. For cable connection, please refer to “Appendix D CABLE CONNECTION” of “FANUC Robot series “R-30iA/R-30iA Mate CONTROLLER Ethernet Function OPERATOR’S MANUAL” (B-82974EN/01). If standard data transfer program or built-in of this function are used very often, please lessen frequency of use. If standard data transfer program or built-in of this function is executed consecutively, there should be interval. If there is already interval, please lengthen it
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 DTBR-002 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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