Fanuc alarm: 301 - APC alarm: nth-axis communication

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, 0/00/0-mate, 0i
301 - APC alarm: nth-axis communication

Alarm Description

nth-axis (n=1-8) APC communication error. Failure in data transmission Possible causes include a faulty APC, cable, or servo interface module.

Additional Suggestions & Alarm Clarification

Absolute pulse coder, cable or scale faulty, Check to make sure parameters are set correctly and that someone did not try to turn the scale or encoder off or on while troubleshooting. (APC)

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