reading analogs in ml1200 from slc504

[sthompson]

I see one issue. Are you are trying to use the same N7 Integers for your Message Target that you indicated in an earlier Post (N7:0-4), and your Control Block. This will not work, I would create a separate N File for your control Block. Say something like N10, and make sure that it is at least 14 Words (Elements) long.


Stu....

 

[nathan.slade]

That's what's going on. Thanks mate, I'll give it a go after work today. Got some Xmas stuff to do on the way home but will post results latter.
I knew you would come through for me stu. I have read a lot of your posts and all are very informative.

 

[sthompson]

Well, I have my moments.

Stu....

 

[nathan.slade]

So I got home and changed my control block to n9:0 and everything started to work like a charm. A big thanks to stu. I changed one of my analogs on the ml1200 and near rewrote the hole program. Now I need to do more reading on how to cascade messages.

 

[sthompson]

So I got home and changed my control block to n9:0 and everything started to work like a charm. A big thanks to stu. I changed one of my analogs on the ml1200 and near rewrote the hole program. Now I need to do more reading on how to cascade messages.

Congratulations on getting it working!

I normally use a Trigger Timer Pulsing a Counter with EQU Instructions to Trigger each MSG Instruction in turn. For an example of this, see Ken Roach's Sample Program that he wrote for someone who needed to do something similar.

http://www.plctalk.net/qanda/showpost.php?p=512177&postcount=5

Stu....