Measurement underflow at the I/O module

What does 7 mean?

The input signal measurement at the I/O module has fallen below its minimum measurable range (underflow). This indicates that the sensor input is providing a value lower than the module can process, potentially leading to incorrect or invalid safety-related readings.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Ensure the sensor is correctly calibrated and functioning within its specified range.