CCW - UINT to DINT?

[PLCs_are_fun]

I apologize for the basic question but I have read the documentation and searched online and I'm still not getting it...

I want to convert UINT to DINT in CCW. I am able to do this using 16MOV instructions to map the individual bits, but I would like to do it with 1 COP instruction.

Src: my_UINT.0
Dest: my_DINT.0
Length: 16

gives a build error "too few parameters used"

Src: my_UINT
Dest: my_DINT
Length: 1

compiles but gives status code 0x06 "source data size is too small for copy"


Could someone please point me in the right direction?

 

[joseph_e2]

Can you make my_UINT an array tag with 2 elements? You would then MOV the value into my_UINT[0] and use that as your source element in the COP instruction.

 

[PLCs_are_fun]

Works like a charm, thanks! I didn't realize I needed the same number of bits in the source and destination elements.

 

[JeremyM]

Can you just MOV or assign the UINT to the DINT directly? There should be no issue.

 

[drbitboy]

Can you just MOV or assign the UINT to the DINT directly? There should be no issue.

More or less; see below.

CCW is akin to Fisher-Price toys.

@PLCs_are_fun: PLCs typically do not COPy individual bits, or use bit addressing to do so; XICs and OTEs are used for that. UINTs are DINTs are each groups of bits, and there are instructions to handle those groups.

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