Applicable Systems
Series 0i
Series 16/18/21
Alpha
Beta
Symptoms
Parameter write is enabled (PWE=1), allowing parameter modification.
Possible Causes
- The parameter write enable (PWE) is set to 1.
- Operator intentionally enabled parameter writing.
Troubleshooting Steps
- Step 1: Set PWE back to 0 after parameter modification is complete.
PWE set to 0. - Step 2: Power cycle the controller to apply the change.
Controller restarts in write-protected mode.
How to Reset
Set PWE=0 and power cycle to clear the alarm.
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Source: Fanuc 0i/0iMate Alarm Code List, FANUC Corporation
Category: CNC
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