DiagnosticActive

Diagnostics Active

Allen-Bradley · Compact 5000 I/O Analog Modules

What does DiagnosticActive mean?

This boolean tag indicates that one or more diagnostic conditions are currently active within the module. A value of 1 signifies an active diagnostic, which could be an Open Wire, Over Temperature, Field Power Off, or Underrange/Overrange condition. It recommends troubleshooting to determine the specific trigger.

Common Causes

  • Open Wire condition detected
  • Over Temperature condition detected
  • Field Power Off condition detected
  • Underrange/Overrange condition detected

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Troubleshoot the module using the Logix Designer application to identify the specific diagnostic condition that is active (e.g., check channel status tags for Open Wire, Over Temperature, etc.).

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Verified technical data. Last updated: March 2026

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Source: Allen-Bradley Compact 5000 I/O Analog Modules