C
Hi,
this is my first post and I'm not really a technical person, but I'd like to know something that I've always been curious about. How does a PC or Touchscreen control a PLC or the mechanical parts of a system?
For example, if I have a solenoid butterfly valve set to open or close and the display on my screen is "Open" and "Close"...what exactly happens when I click or touch on "Open?" Does the PC send a direct signal to the valve? Or does it send a signal to the PLC (if there is PLC controlling the system)? What kind of signal is it? Electric or electronic? How different is this set up as opposed to if I just use a direct push button to control the valve?
I apologize for the naive post. I just wanted to learn more.
this is my first post and I'm not really a technical person, but I'd like to know something that I've always been curious about. How does a PC or Touchscreen control a PLC or the mechanical parts of a system?
For example, if I have a solenoid butterfly valve set to open or close and the display on my screen is "Open" and "Close"...what exactly happens when I click or touch on "Open?" Does the PC send a direct signal to the valve? Or does it send a signal to the PLC (if there is PLC controlling the system)? What kind of signal is it? Electric or electronic? How different is this set up as opposed to if I just use a direct push button to control the valve?
I apologize for the naive post. I just wanted to learn more.