SLC5/04 AI Configuration Change

[SCRUFF]

It's me again and I apologize for the questions? I currently have a SLC 5/04 w/ a bad I/O point on the AI Card that is already designated for this specific Flow Transmitter.

I need to change the current AI Point to a spare point on the card and DO NOT know how to do it. Can someone PLEASE HELP me out ASAP???

Thanks...

 

[Ken Roach]

What you need to know is which Input memory word corresponds with the apparently defective channel on the module. Step 1 is finding out what kind of analog input module you have. If you can't remove it or don't have a label inside the door, look in the RSLogix 500 I/O configuration for the slot it's in.

SLC input memory is addressed by Slot number. If you have, for example, a 1746-NI4 module in Slot 2, the input addresses for the four analog channels are

I:2.0 Channel 1
I:2.1 Channel 2
I:2.2 Channel 3
I:2.3 Channel 4

You'll need to do a search for all the references to the existing channel, then edit all those instructions to refer to the new channel. That's a lot easier offline (there's a search/replace function), but can be done online too.