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ErrorLib — Industrial Fault Code Library

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CJChxx.FieldPowerOff

Cold Junction Field Power Off (5069-IY4, 5069-IY4K)

Allen-Bradley · Compact 5000 I/O Analog Modules

What does CJChxx.FieldPowerOff mean?

This boolean tag indicates that field power is not present at the cold junction for channel (xx). A value of 1 means field power is absent, which can prevent cold junction compensation from operating correctly.

Common Causes

  • Field power supply to the cold junction is interrupted or disconnected.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that field power is present and correctly connected to the cold junction terminals of channel (CJChxx).

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

Related Faults

Alternating yellow/redCalibration In ProgressCJChxx.FaultCold Junction Data Fault (5069-IY4, 5069-IY4K)CJChxx.OpenWireCold Junction Open Wire (5069-IY4, 5069-IY4K)
Source: Allen-Bradley Compact 5000 I/O Analog Modules
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