P
Communication error between amplifiers
Fanuc · Series 30i/31i/32i-MODEL B Plus
What does P mean?
A communication error has occurred between various amplifiers. This issue is typically caused by a defective connector or cable (CXA2A/B) used for inter-amplifier communication, or an internal failure within the Servo Amplifier. This error prevents proper control signal exchange.
Common Causes
- Connector/cable (CXA2A/B) defective
- Servo Amplifier failure
Repair Steps
- 1
Check the integrity and ensure secure connection of connector CXA2A/B between the amplifiers.
- 2
If the connector and cable are confirmed to be in good condition, replace the Servo Amplifier.
Verified technical data. Last updated: March 2026
Source: Fanuc Series 30i/31i/32i-MODEL B Plus