Fanuc · Series 30i/31i/32i-MODEL B Parameter
This alarm is issued when bit 0 (PWE) of setting parameter No. 8900 is set to 1. This condition indicates that the parameter write enable switch is active, which is typically enabled only for parameter modification and should be disabled during normal machine operation to prevent unintended changes.
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Check the state of bit 0 (PWE) of setting parameter No. 8900 — set it to 0 to disable parameter write enable.
Verify if the external reset signal is active — depending on the setting of bit #2 (PWR) of parameter No. 3117, an external reset may clear this alarm.