- #1
tomizzo
- 114
- 2
Can someone please explain what exactly terminals labeled ‘common’ mean. I originally thought that common referred to any point that was meant to act as a common voltage point. As in, there could exist a common point of 24V that could act like a source, or a common point of 0V to act like ground. I’ve attached an example diagram of a terminal labeled with both a digital input common and a 24V common. Why exactly are there two different commons?
From reading into this even more, I’ve began believing that 24V common is not meant to act a 24V source, but acts as the negative terminal for a 24V source. I know this should be simple, but it’s confusing me.
Can anyone explain to me what each of the 5 terminals in the diagram are meant to do with emphasis on the terminals labeled ‘common’?
Thank you
From reading into this even more, I’ve began believing that 24V common is not meant to act a 24V source, but acts as the negative terminal for a 24V source. I know this should be simple, but it’s confusing me.
Can anyone explain to me what each of the 5 terminals in the diagram are meant to do with emphasis on the terminals labeled ‘common’?
Thank you