Good day,
I have Allen Bradley Compact Logix PLC with few I/O cards, there are 5 analog output cards amongst them.
Today one of the analog cards does not provide more then 3.8 Volt on the outputs. Any voltage between 0 and 3.8 V is supplied correctly, whereas anything above it results in 3.8 V only.
The card does not report any errors to PLC. Other cards do not have this problem.
The PLC was running non-stop for couple of years and yesterday it was turned off for an hour. The problem started right after this.
I have checked the module settings and verified that the output is not limited to 3.8V
Can anyone give any advice in regards to this situation?