Problem Saving Channel Settings on AB 1771-IFE PLC5

[hardaysknight]

I'm having issues saving the individual channel settings on a 1771-IFE Analog card.



We recently swapped from 0-10v to 4-20ma transducers. I set the jumpers on the card, and set up the channel config in RSLogix5 and it works great, but any time the PLC is powered off/faulted/swapped to program mode, it goes right back to having a 0-10v channel configuration, throwing off our transducer readings.


This card is in a remote rack via controlnet

 

[5618]

You have a BTW triggered by the system first scan bit that writes configuration data to the module. The configuration data for the modified i puts needs updated in the data that is written. To change from 0-10V to 4-20mA, two bits for each modified channel will need changed from 11 to 00.

See chapter 4 of the manual:
https://literature.rockwellautomation.com/idc/groups/literature/documents/um/1771-um665_-en-p.pdf

 

[hardaysknight]

Is this not right?


I'm gonna be honest with you, I have no idea what I'm doing.




EDIT: I figured it out. We aren't using a BTW to write the settings. We are using MOV instructions for each individual integer for the card configuration. No idea why.

 

[5618]

You got it. I didn't notice you were using ControlNet. Local or expansion rack would have been block transfer.

 

[Nova5]

Ahh PLC5.. when a Tank and a PLC had a lovechild.