mov

Hello
I'm using RS 500
I would like to move six numbers (N7:1 thru N7:6) to different locations in file N10 depending on the value in N7:0.
e.g. If N7:0 = 1 I want to move N7:1 thru N7:6 to N10:4 thru N10:9
If N7:0 = 2 move them (N7:1 thru N7:6) to N10:24 thru N10:29
If N7:0 = 3 move to N10:44 thru N10:49
and so on.
The number of different values in N7:0 could be as many as 20.
The number of words to be moved may increase from six to as many as 19.
Needless to say I'm a novice with PLC's but I think I could do this with a bunch of if statements. However, I'm sure there's a more efficient way to do it?
Thank you
Danny

Yes, by select case of N7:0 or by indiredt pointer N10:[x] where x=N7:0*20-16 if N7:0>0, but how many element ? 6 to 19 and what is the logic for that ? Select case again..

I think seppoalanen is trying something along these lines...

Don't forget to take into consideration that limits must be added to keep the indirect addressing from crossing data files, going negative, and other fun things like that.

The number of words to be moved may increase from six to as many as 19.

Click to expand...

My sample will not work with more than 16.

could be one rung...

but, here's a two rung solution...

Thanks jdbrandt,

At least I got the point across.....
BTW, before someone else points it out, theres a flaw with my logic, if N7:0 is zero it will write to words N10:4 thru N10:9 as if N7:0 is 1.