SRVO-070
Pulsecoder Serial Data Start/Stop Bit Error
Fanuc · R-30iB Mate + Mate Plus Robot
What does SRVO-070 mean?
The start and stop bits of the serial data received from the Pulsecoder are abnormal. This indicates a communication framing error, often pointing to issues with data transmission integrity, such as signal distortion or timing discrepancies.
Repair Steps
- 1
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.
- 2
Check that the shielding of the robot connection cable (RMP1, RP1) is securely grounded in the cabinet.
- 3
Replace the Pulsecoder.
- 4
Replace the servo amplifier.
- 5
Replace the robot connection cable (RMP1, RP1, RM1).
- 6
Replace the internal cable of the robot (for the Pulsecoder, or for the Motor).
Verified technical data. Last updated: March 2026
Source: Fanuc R-30iB Mate + Mate Plus Robot