To check PLC inputs, you need to set your multimeter to the appropriate mode and range, depending on the type of input signal you are measuring. For example, if you are measuring a DC voltage ...

Block diagrams are clear, simple diagrams showing all of the input, process and output elements that make up the system being designed. They are easy to read and show how the circuit will work.

How to use the examples when you don't have a traffic signal If you have the PLC but not a traffic signal, you can wire up other devices to the PLC input and output terminals. Currently, I do not have ...