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ErrorLib — Industrial Fault Code Library

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SW0100

PARAMETER ENABLE SWITCH ON

Fanuc · Series 0i-MODEL F Plus Parameter

What does SW0100 mean?

This alarm is issued when bit 0 (PWE) of setting parameter No. 8900 is set to 1. It indicates that the parameter write enable switch is active, allowing changes to parameters. This state is often intentional during maintenance but can cause unintended modifications if left active.

Common Causes

  • The parameter enable switch has been activated, allowing parameter modification.
  • Configuration interface is now accessible for adjustments.
  • System is ready for parameter updates.
  • Safety interlock for parameter changes has been disengaged.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the state of bit 0 (PWE) of parameter No. 8900 to confirm it is set to 1.

  2. 2

    Clear the alarm by turning on the external reset after parameter modifications are complete.

Browse all codes in this manual (13)
Verified technical data. Last updated: April 2026

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Source: FANUC Series 0i-MODEL F Plus Parameter
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