pecos_maui

Thanks for the info. I looked at my configuration window at the module list and found that my version does not list the IO-AI8 as shown in your graphic (IO-ATC8 / IO-AI8), it only shows IO-ATC8. I've assigned slot 0 IO-ATC8 it appears to accept it. I believe that I downloaded the latest firmware for my PLC. Should I be looking for more updates to, match what you see?

Aloha all, I recently acquired the following and have connected them in the following order: Model V120-22-UN2, HW Rev A, OS Version 4.00(18), Vision FONTS - V1.3 (B00) 0 - EX-A2X expansion adapter 1 - IO-AI8 8 analog inputs 2 - IO-ATC8 8 analog inputs / 8 thermocouple inputs 3 - IO-AO6X 6 analog outputs 4 - IO-RO8 8 relay outputs 5 - IO-TO16 16 transistor outputs 6 - IO-R08 8 relay outputs When attempting to configure the HW / IO modules, the first module in the list IO-AI8 is no where in the list. Why is this module omitted from the list? The plc connects and communicates just can't get the HW configured as I need to. Any help is appreciated.