PID Control of Tank Level | Programming in Codesys and Simulating in Factory IO | KEPServerEX |

[@salmabftima5925]

Thank you for the quality of the video. I would like to ask about discharge valve in visualisation takes the discharge valve variable defined in GVL FIO or the control signal ? and y of the PID block normally is the output of the process not the control signal ?

[@m.alaeddin]

Thanks for your compliment.
DischargeValve variable is a real value between 0 to 10 that controls a control valve in FactoryIO and in this case it is like a disturbance in the system.
Output Y of PID block is exactly the control signal.
Output of the process is the feedback signal and in this case is Level PV (ACTUAL input of PID block).

[@asv5769]

Excellent video, just found it on YT. Is there any short tutorial, what sw I need and how to install, where to download from, what licenses do I need etc?

[@m.alaeddin]

Thanks for your compliment, watch the following video.
ruclips.net/video/Lt07vfT4oNg/видео.html

[@bobgrove6581]

Is there a way to change the control action of the PID? From Direct acting to Reverse acting?

[@m.alaeddin]

Set P as negative value to invert the control of the PID function block.