Fanuc · R-30iB Mate + Mate Plus Robot
The serial Pulsecoder fails to return serial data in response to a request signal. This indicates a communication fault between the servo amplifier and the Pulsecoder, potentially due to loose connections, damaged cabling, or a faulty Pulsecoder itself.
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Ensure the robot connection cable (RMP1, RP1) connector (CRF8) on the 6-Axis servo amplifier and the connector on the motor side are tightly connected.
Check that the shielding of the robot connection cable (RMP1, RP1) is securely grounded in the cabinet.
Replace the Pulsecoder.
Replace the servo amplifier.
Replace the robot connection cable (RMP1, RP1, RM1).
Replace the internal cable of the robot (for the Pulsecoder, or for the Motor).