Shift Register Applications.....

[Peter Nachtwey]

Shift register or circular queue

Which is more efficient?

 

[Leadfoot]

Lancie:

I have an application just like yours that I am going to use an AB Micrologix 1500 PLC and an encoder. Do you have any sample AB code with the specifics???

Thanks,

I thank Jay Anthony for this link. It is many different ways to do encoders. Yes it is for OMRON but you can easily cross it over. Which would be good practice programming.

http://forum.mrplc.com/index.php?ac...&CODE=02&id=101

You will find a shift or two involved.

 

[STEVEBOT]

Have shift registers galore all over the site. Two types bit shifts, 1 or 0 par present or not, Word shifts, mutiple part checks mainly fr data aquisition but also used for part present at station has passed all relevant checks.

 

[Doug-P]

OK, I'll play

Which is more efficient, shift register or circular queue?

In my limited experience I'd say: A queue, because you're manipulating pointers to information rather than moving the actual information around.

 

[Thomas Sullens]

don`t know

Peter how would you do a circular queue with a AB plc and start simple as i don`t know what a circular queue is. By simple i
mean for the average person.

 

[Lancie1]

Yes, I do have an SLC-5/03 program, quite large. I could post parts of it, or E-mail the entire thing direct to you. ([email protected])

 

[Thomas Sullens]

thanks

Lancie1 I don`t need a program just wondering how a
circular queue works comopared to a shift register.
Probably couldn`t understand it anyway have enough
problems with small programs.

 

[Doug-P]

circular queue

Here's a pretty basic explanation.

 

[BITS N BYTES]

Chris Elston's post is a classic example of a shift register application. Worth studying and well presented.


http://www.mrplc.com/kb/index.php?page=index_v2&id=71&c=12