jcraft
Member
I am new to a lot of this stuff so just bear with me. We use a lot of GE plc's around the facility and I will be setting one up soon on a machine retrofit. Basically we need to bring a thermmocouple input into the plc and then do all the neccessary scaling and pid instruction and then fire an output that will energize a relay to provide power to a band heater. My question is pretty basic as to how to set the logic up to do this such as how to scale where to move the data and how to setup the pid loop ( which I am assuming will just be the PID instruction for GE. If any one can walk me through the basic steps how to do this or has a basic logic circuit that shows this that would be great. Thanks