I.Chxx.Fault

Channel Data Inaccurate / Untrusted

Allen-Bradley · Compact 5000 I/O Analog Modules

What does I.Chxx.Fault mean?

This input tag, when set to 1, indicates that the data reported by channel xx is inaccurate and should not be used for control applications. This signifies a fundamental issue with data integrity for that specific channel, requiring immediate troubleshooting of the channel's setup and connections. The tag automatically resets to 0 once the underlying condition is removed.

Common Causes

  • The specific channel (xx) is disabled in the module configuration.
  • An Open Wire condition exists on the input module.
  • A No Load condition exists on the output module.
  • An Underrange or Overrange condition is present on the input or output signal.
  • A Short Circuit condition is detected on an output channel.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that channel xx is enabled in the module's Logix Designer application configuration.

  2. 2

    Physically inspect the wiring for channel xx for open circuits or disconnections.

  3. 3

    For output channels, verify the load is properly connected and functioning.

  4. 4

    Measure the input or output signal at channel xx to confirm it is within its specified operating range.

  5. 5

    For output channels, measure output current to check for short circuit conditions.

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