maintenanceman38
Member
I need a plc controller to handle 12 pid zones. I do not have a problem with programming yet. as I can do AD and AB. but my problem is the price. Because what I want to do, Costs way too much to use a HMI and input 12 thermocouples. Does anyone know of a PLC that is is cheap as the AD brands and can handle multiple PID loops without a bunch of expensive thermocouple cards? or even one plc that can have one card and connect to an HMI? I am controlling heaters a simple pid event. thanks.