The [c]FP-RTD-122 and [c]FP-RTD-124 modules support two error codes; "Out of Range" and "Open RTD". Generally, if a channel is configured for temperature measurements and there is no wiring, you will see the "Open RTD" message. However, if the channel is configured for resistance, you will see the "Out of Range" message.
Regards,
Aaron
LabVIEW Champion, CLA, CPI