Fanuc alarm: 421 – EXCESS ER(D)

CNC Machine Alarm Error & Message: 421 – EXCESS ER(D)
Fanuc Alarm Description:
While the dual position feedback function is being applied, an excessive
difference was detected between a semi-closed loop error and closed
loop error. Check the dual position conversion factor set in parameter
Nos. 2078 and 2079.

Additional Suggestions & Fanuc alarm: 421 – EXCESS ER(D) Clarification:
None currently

Troubleshooting Recommendations for (Fanuc alarm: 421 – EXCESS ER(D)) Error Message:
Post troubleshooting recommendations for (Fanuc alarm: 421 – EXCESS ER(D)

Fanuc CNC Control Models Applicable:, , 0i


Fanuc alarm: 421 – EXCESS ER(D)