anthr_plcnewbie
Member
Hi,
I have PLC-5 that has analog input module. The modules are setup as differential inputs so two wires go to 1+ and 1- terminals. I was wondering how will I be able to measure the current 4-20mA for the channels? Do I put an ammeter between the sourcing device and 1+ terminal? or sourcing device and 1- terminal?
Thanks,
I have PLC-5 that has analog input module. The modules are setup as differential inputs so two wires go to 1+ and 1- terminals. I was wondering how will I be able to measure the current 4-20mA for the channels? Do I put an ammeter between the sourcing device and 1+ terminal? or sourcing device and 1- terminal?
Thanks,