UNC-410 always reads a specific, incorrect value on one of its AI input points.

Issue

UNC 410 AI point no longer reads the input properly.

Product Line

TAC I/A Series

Environment

UNC-410

Cause

Input is not reading the input value properly.

Resolution

  • Verify that the NDIO object for that physical point is still programmed correctly -- 10K Thermistor, Resistance, 0-10 VDC, 4-20 mA.
  • Verify that the input sensor or device has not been damaged and has not been replaced with an incorrect replacement.
  • Verify that the physical input port has not failed or become damaged by either programming an unused input in place of the failed port or temporarily swap the input device/sensor to another port.  You may need to swap the input with another currently used input if none are available.