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The PCV sends a feedback signal (in volts) to the PLC telling the PLC what pressure it is at, the
PLC sends a control signal to the PCV (in amps) telling it what to do next. How does the PLC
know what a feedback signal of 5V means and how does the PCV know what a control signal of 5mA
means? Any books that explain what is going on would help...Thanks
PLC sends a control signal to the PCV (in amps) telling it what to do next. How does the PLC
know what a feedback signal of 5V means and how does the PCV know what a control signal of 5mA
means? Any books that explain what is going on would help...Thanks