I x .DF1.DiagnosticSequenceCount

DF1 Diagnostic Sequence Count

Allen-Bradley · Compact 5000 I/O Serial Module

What does I x .DF1.DiagnosticSequenceCount mean?

This SINT tag for module 'x' increments each time a unique diagnostic condition is detected or transitions from active to inactive on the DF1 channel. It acts as a change counter for diagnostic states, providing a means to track the frequency and occurrence of diagnostic events. The count resets to zero upon product reset or power cycle, and wraps from 255 (-1) to 1, skipping zero.

Common Causes

  • Occurrence of a new distinct diagnostic condition on the DF1 channel of module 'x'.
  • Resolution of a previously active distinct diagnostic condition on the DF1 channel of module 'x'.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Use this counter in conjunction with `I x .DF1.DiagnosticActive` to identify diagnostic event frequency and when new conditions arise for module 'x'.

  2. 2

    Record the counter value before and after troubleshooting steps to confirm if diagnostic conditions are resolving or recurring for module 'x'.

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Verified technical data. Last updated: March 2026

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Source: Allen-Bradley Compact 5000 I/O Serial Module