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ErrorLib — Industrial Fault Code Library

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18-128

Guard Motion safety function fault

Allen-Bradley · Logix 5000

What does 18-128 mean?

A fault specific to the Guard Motion safety function has occurred. This fault is only applicable when using a drive with Guard Safety functionality and indicates a safety integrity issue.

Common Causes

  • A fault specific to the Guard Motion safety function has occurred
  • Fault is applicable only when use a drive with Guard Safety functionality

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    See the Guard Motion attributes and Guard Status bits to determine the cause of the fault to determine corrective action.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

00D0No block-transfer response (timeout)00D1Checksum mismatch in read response00D2Read/Write request/response mismatch
Source: Logix 5000
Open Manual (Page 158)Search more codes in this manual