RSLogix question ????

Can you guys check out this sequence and explain what I'm doing wrong? This method was suggested to me by someone here but I just can't get it to work or I'm misunderstanding it.

----------------------------
ADD
Source A F8:13
Source B F8:14
Dest L9:0
----------------------------

DIV
Source A L9:0
Source B 10000
Dest S:13
----------------------------

If I have 353343 in L9:0. Then I end up with 36 in S:14 and nothing in S:13. What I want to get is 35 in S:14 and 3343 in S:13. Does it have to do with the floating point number being converted?

In your DIV box - have the destination be some dummy location. It will have the rounded result of the division - which you obviousloy don't want. Don't explicitly send anything to the math register.

If you want to retain these 2 values then immediately do two moves:

MOV S:13 to Remainder N regsiter
MOV S:14 to Quotient N register

check s:14 the rounded portion is stored in s:13 the unrounded data is stored in S:14 on the devide instruction page 4-9 of the SLC instruction manual publication 1747-RM001c-en-p

looks like Bernie beat me to it

I tried replacing the S13 with N7:65 and I'm still having the same problem. Rounded number in S13 and nothing in S14. Mordred is there a link for that manual? I did a search for it but didn't find anything I could download from

Nevermind, got the manual.

I'm sorry thaat I probably mislead you in my reply. Check out these two PDFs from the knowledgebase (searched on 'rmainder' in 'programmable controllers')

And - in an attempt to make up for it - one more item from the knowledgebase

bernie_carlton said:

And - in an attempt to make up for it - one more item from the knowledgebase

Click to expand...

Holy **** that's exactly what I'm looking for!!!!! I didn't realize this instruction could do this. How do you access the knowledgebase Bernie? There seems to be a lot of stuff there that is invaluable!

Actually that's not exactly what you were looking for. You want Long/10000 in the upper word. The example gives you Long/65536 in the upper word.

The knowledgebase is here. You'll have to register but it's free. And there is a lot of stuff there with pretty good search capabilities.

http://www.rockwellautomation.com/knowledgebase/