Caterpillar Adems III datalink with PLC

Resently upgrade Caterpillars ECM to an AdemsIII system and OPTO 22 does not communicate with PLC need to find out it protocol is the same, we have an older Adems and it seems to working with PLC?

Hello copc,
Welcome to the forums! Sounds like you might want to contact our Product Support Group (it’s free) for some troubleshooting help. Click here.
-OptoMary