PID

[Shamus]

Hello all I'm not new to step7 basics but I am new to step7 PID control I am using an S7 315DP rack with capability for the following setup Temp Sensor (4-20mA Input) Temp Control Valve (4-20mA Output) Temp Setpoint (HMI setpoint) Does anyone have an example program for the PID control of the above or similar. I do have a manual for the PID instructions but due to time constraints I'm looking for a quick start approach. many thanks Shaun

[tpedley]

give this a try. you WILL have to play with it to match your loop. use the help file built in for CONT_C. click on it and press F1. this should give you everything you need to get a PID up and running, but like i said, you will have to play with the settings. good luck. Pid.zip