Channel Data Potentially Inaccurate

What does I.Chxx.Uncertain mean?

This input tag, when set to 1, indicates that channel xx data might be inaccurate, but the degree of inaccuracy is unknown. While not a definitive fault, it suggests potential data integrity issues, and the data should generally not be used for control. The tag typically resets to 0 after a small delay once the condition is removed.

• The data signal is slightly outside the channel's normal operating range.
• The module or channel is operating slightly over its specified temperature.
• An invalid Sensor Offset value is configured for channel xx.
• A calibration fault occurred on channel xx.
• Calibration is currently in process on channel xx, or an active calibration on another module channel is affecting it.

Click steps to track your progress.

1. 1

   Measure the input/output signal for channel xx to confirm it is within the expected operating range.

2. 2

   Check the ambient temperature at the module installation location.

3. 3

   Verify the O.Chxx.SensorOffset tag setting for channel xx in the Logix Designer application.

4. 4

   Check the module status in Logix Designer application for any active or recent calibration faults.

5. 5

   Confirm if any calibration processes are active on the module or other channels.