Hi everyone, first post here, but have been reading a while.
I work in the HVAC sector and am hoping to learn a bit about AB PLC's.
I have some test gear I have purchased and setup, been talking to it and trying things for a day or two.
I have come across a problem and after searching through these forums and some manuals I have, I think I realise that I am searching for the wrong thing, because I can't seem to find an answer.
My problem is that I have a simple switch and at the end of the rung a bit, when I go online my switch works, but the bit doesnt change state. I cant for the life of me see why not. I have other switches as inputs, and they all change state online, but no action from any bits. I have them called B3:0/0 etc.
I am using a 1746-P1 in a A4 chassis with a 1747-532C/D CPU. The three cards I have are a IN16, a OW16 and a NT4
I feel a bit silly asking what I am sure is a simple question, but I have read so many things I think I might be going in circles.
cheers
Charlie
I work in the HVAC sector and am hoping to learn a bit about AB PLC's.
I have some test gear I have purchased and setup, been talking to it and trying things for a day or two.
I have come across a problem and after searching through these forums and some manuals I have, I think I realise that I am searching for the wrong thing, because I can't seem to find an answer.
My problem is that I have a simple switch and at the end of the rung a bit, when I go online my switch works, but the bit doesnt change state. I cant for the life of me see why not. I have other switches as inputs, and they all change state online, but no action from any bits. I have them called B3:0/0 etc.
I am using a 1746-P1 in a A4 chassis with a 1747-532C/D CPU. The three cards I have are a IN16, a OW16 and a NT4
I feel a bit silly asking what I am sure is a simple question, but I have read so many things I think I might be going in circles.
cheers
Charlie