FANUC system PMC alarm ER07 alarm causes and solutions

CNC system: fanuc system 0I-TC

Alarm number: ER07

Alarm description: ER07 OPTION LADDER STEP Ladder diagram option function not found

Reasons for alarm: 1. System data is lost.

Solution: 1. Restore the backed up CNC parameter data.

2. Check the data list and re-enter the CNC parameters.

3. Contact the FANUC system manufacturer to confirm the number of steps in the ladder diagram and select the necessary capacity.