ceilingwalker
Lifetime Supporting Member
Good day all, I changed the configuration of an RTD Module and when I resumed the program the system had a fault and shut-down. The module is a 1746-NR4 and it is connected to a 5/03 processor. When I went to the Processor Status Page the error description displayed "Module in slot 11 has a general alarm bit set to 1" (not verbatim). I shut the entire plc down and re-stored it again, four times. Each time I would return power, would immediately go into fault mode and shut all of my outputs down. The only remedy I could find was to remove the contact blocks from each of the modules, turn the system back on, then (with modules powered) re-install the contact blocks. After doing that, the system was fine and error-free. My question is, why did it require me to disconnect the field wiring and re-install, with the power on, to clear the error and resume scanning the program. Thank you.