Home Forums General Discussion Technical Questions TAC32 1925 Fault

Getting a 1925 fault. CPUA/SP mismatch. Recommends performing SPC config which I did but no change. Checked SP IO Map and compared it to CPUA IO’s all in same state. Not sure where else to look. SW issue? Or Hardware? Oh and it says Stop Switch in IMS but stop switch is good. Have 120VAC.
Looking for any suggestions. Thanks

You need to do couple learns ,I believe SPC and sp?
Also make sure your bypass switches are not sticky ,turn them on off few times and try learn again ,do you have IMS to plug in ?you may need to check inputs to confirm bypass switches function ,you probably stuck between operation modes

Make sure J16 hasn’t changed on you. Should be 18. If it has changed and you’ve done an SPC already you’ll have to do another after fixing J16.

What is J16 parameter adjustment?

Number of discrete ports

Ahh. So is 18 always gonna be the correct setting?

Just curious because this post and thread just fixed a problem I was having that I have never had before. J16 had changed itself to number 27 instead of 18 after a wicked power outage. And we were about to start replacing the CPU and IOD boards but I tried the instructions listed here in and it all of a sudden working normally. Nowhere in any of the resources I have does it list a j16 setting. Ergo the questions

Always 18 for a TAC32H. Most often it will change to 0 but it can change to random numbers