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Testxx.FieldPowerOff

Test Channel Field Power Loss

Allen-Bradley · Compact 5000 Digital I/O Modules

What does Testxx.FieldPowerOff mean?

This boolean tag indicates that a field power loss condition exists on the test channel Testxx. A tag value of '1' signifies that the external 24V DC field power supply for the test channel is not present or has failed, disrupting its operation.

Common Causes

  • Loss of the 24V DC field power supply connected to the module.
  • Blown fuse or tripped circuit breaker in the 24V DC field power supply circuit.
  • Improper or damaged wiring between the 24V DC field power supply and the module's field power terminals.
  • Failure of the 24V DC field power supply unit itself.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the 24V DC field power supply connected to the module is energized and producing the correct voltage (e.g., measure 24VDC at the module's field power input terminals).

  2. 2

    Check any fuses or reset any circuit breakers associated with the 24V DC field power supply circuit.

  3. 3

    Inspect the field power wiring connections to the module for integrity and secure termination.

Browse all codes in this manual (38)
Verified technical data. Last updated: April 2026

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Source: Allen-Bradley Compact 5000 Digital I/O Modules
Open Manual (Page 130)Search more codes in this manual