GE PLC's compact?

[Steve Bailey]

Mine were referenced as %AI0020 (21) and %AQ0013 (14), looked right over them

What do you mean by the numbers in parentheses? GE addresses are not zero-based. The first available %AI address is %AI0001, not %AI0000.

Is it normal when downloading for it to pause on %R for a minute or two?

%R, at 2K words is the biggest single block of I/O memory, so its not surprising for it to pause. A second or two would not surprise me, but a minute or two sounds unusual.

 

[geniusintraining]

%AI0020 (input word 1) and %AI0021 (input word 2)
%AQ0013 (output word 1) and %AQ0014 (output word 2)

 

[Steve Bailey]

OK, got it. The UEX636 is four analog inputs and two analog outputs. Your %AI addresses are %AI0020 - %AI0023. The %AQ addresses are %AQ0013 and %AQ0014.

 

[geniusintraining]

Yep, I am only using 2 of the inputs... program is running good, thanks again for your help!