Help with shift function

[Vinicios]

I need help with the SHR function to shift bits, I can't shift anything. I get The high or low signal from an inspection camera and would need to reject the failed products.

I've already read the material in help and on the forum and i've had no sucess.

I'm using U90 ladder for a V230 hmi.

 

Thanks.

[Flex727]

Moved to U90 forum.

[Flex727]

Perhaps I was too hasty in moving to the U90 forum. A V230 PLC is programmed with VisiLogic, not U90.

[Vinicios]

Correct, I'm using Visilogic, I had the U90 on my head, sorry.

 

I was using the function below.

[Flex727]

Moved to VisiLogic forum.

[Flex727]

Can you describe your problem a little more clearly besides "I can't shift anything"? What exactly does it do when you press F1? Further, if you only want a single bit shifted, you might consider changing the Direct Contact of F1 to a Positive Transition Contact. At the bottom of your VisiLogic screen you have the ability to inspect your integer operands in binary. Watch that window when you're performing the shift operation (when online with the PLC, of course).

[kratmel]

Hi , you can use vector copy for solve your problem

Joe Tauser post this solution

I use it for one of my project

 

P.S. You need V230 on table for simulate program via Visilogic

[Vinicios]

Hello again, in the tests carried out with several functions, no bit was shifted, probably I was doing something wrong. I'll analyze Joe's program and understand what I'm doing wrong, thank you very much for now.

[Ausman]

Vinicios, if you have the functions in a subroutine, ensure that you are calling the sub.   Utils/Call/Call Subroutine 

The sub does NOT run if you don't call it.  As well, there are other potential issues.  Read this:

https://forum.unitronics.com/topic/8850-important-sub-routine-advice-updated/

cheers, Aus

[Joe Tauser]

If you can't get it working upload your program so we can have a look.

Joe T.

[DanT]

Hi;

 

In the screen shot, F1  is a NO Contact.

That means as long as F1 is Pressed, the shift will happen every scan cycle.

So the data will be thru the shifting in say 16 cycles. - a blink of the eye.

Try with a   ---|P|----   for   F1  and every time the F1 key is pressed, then 1 shift at a time -  abd observe the output.

Aslo, if it in a subroutine, be sure it is being called.  and maybe note how you are calling the subroutine - every scan cycle or intermittent.

As Joe noted, post the program so we can see the whole picture.

 

DanT