Cold Junction Data Fault (5069-IY4, 5069-IY4K)

What does CJChxx.Fault mean?

This boolean tag indicates that the cold junction data for a specific channel (xx) is inaccurate and cannot be trusted for application use. A value of 1 signifies bad data, causing a fault. The tag automatically resets to 0 once the underlying condition is resolved.

• Cold junction channel (CJChxx) is disabled
• Open Wire condition at the cold junction
• Underrange/Overrange condition for the cold junction temperature
• Short Circuit condition at the cold junction sensor or wiring

Click steps to track your progress.

1. 1

   Verify the channel (CJChxx) is enabled in the module configuration.

2. 2

   Check for an Open Wire condition at the cold junction sensor or wiring.

3. 3

   Measure the cold junction temperature to ensure it is within the specified operating range (not underrange or overrange).

4. 4

   Inspect the cold junction sensor and wiring for any short circuits.