Tech7
Member
We have a micro 984-230 in our nuke plant that will not turn on it's local outputs. The Taylor software reports the outputs are on but none of the four output cards will fire. I have tested the cpu in a test rack and it works fine. In the process of testing, I had to wipe out the original program and now it will not accept the old ladder logic. When loading the program it gets to the MSL at 100% then stops. I'm not sure what the MSL is. I get a message 381 "Invalid Address". I can compare the saved program to the cpu and the traffic cop and config are the same. The only difference seems to be the ladder logic and coil states. If anyone has an idea, I would sure like to hear it. Thanks in advance.