Chxx.NotANumber

Channel Output Not a Number (5069-OF4, 5069-OF4K, 5069-OF8)

Allen-Bradley · Compact 5000 I/O Analog Modules

What does Chxx.NotANumber mean?

This boolean tag indicates that the last value received for the channel (xx) output data value was not a valid number. A value of 1 means the data received was non-numeric, which can lead to incorrect output signals.

Common Causes

  • Invalid data format received for the channel (Chxx) output value.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the format and type of the output data being processed by channel (Chxx) from the Logix Designer application.

  2. 2

    Check the configuration settings for channel (Chxx) to ensure they match the expected output data type.

Browse all codes in this manual (33)
Verified technical data. Last updated: March 2026

Related Faults

Source: Allen-Bradley Compact 5000 I/O Analog Modules
Allen-Bradley Error Chxx.NotANumber: Channel Output Not a Number (5069-OF4, 5069-OF4K, 5069-OF8) — Troubleshooting Guide | ErrorLib