Hello,
I have a sensor to indicate the machine guard door is open.I was told to wire it to the relay dry contact and then from the relay to the PLC input modual.
Is there any safety publication out there regarding safety signals of wiring to the PLC ?
why couldn't I wire it strait to the input modual?
any safety links I can go to?
maybe I am confused between hardwire and software programming?
Thanks
I have a sensor to indicate the machine guard door is open.I was told to wire it to the relay dry contact and then from the relay to the PLC input modual.
Is there any safety publication out there regarding safety signals of wiring to the PLC ?
why couldn't I wire it strait to the input modual?
any safety links I can go to?
maybe I am confused between hardwire and software programming?
Thanks