SW0100

PARAMETER ENABLE SWITCH ON

Fanuc · Series 30i/31i/32i-MODEL B Parameter

What does SW0100 mean?

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.

Repair Steps

  1. 1

    Check the state of bit 0 (PWE) of setting parameter No. 8900 — set it to 0 to disable parameter write enable.

  2. 2

    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.

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Verified technical data. Last updated: March 2026
Source: FANUC Series 30i/31i/32i-MODEL B Parameter
Fanuc Error SW0100: PARAMETER ENABLE SWITCH ON — Troubleshooting Guide | ErrorLib