Convert DINT to BOOL[32] and then back to DINT?

theColonel26 · Sep 13, 2020

I need to iterate though the bits in a DINT, but it seems you can't indirectly address a DINT at the bit level.....

So my next thought was Convert the DINT to a BOOL[32] and then back to a DINT.... but it seems I can't do that with a COP instruction either.

Ideas?

I'm on Studio V32 and my PLC is a L310ER (CompactLogix 5380 series)

AlfredoQuintero · Sep 13, 2020

Hello, this may not be the best way to do it, but I think it could work.

chelton · Sep 13, 2020

I only have version 15, but I can indirect bit level by using Dint_Tag.

theColonel26 · Sep 13, 2020

chelton said:
I only have version 15, but I can indirect bit level by using Dint_Tag.

I tried Dint_Tag.i and not with array brackets. BOOOM! you rock

Side note: 15???????? I feel sorry for ya, that is ooooolllllllld

AlfredoQuintero · Sep 13, 2020

I wish I could delete my post. The good thing is I will never forget this solution.

theColonel26 · Sep 13, 2020

AlfredoQuintero said:
I wish I could delete my post. The good thing is I will never forget this solution.

Yeah I have long requested more edit time and deletion ability too....

Buck up now we both know we don't need to brute force it.

AlfredoQuintero · Sep 14, 2020

Indeed...

Contr_Conn · Sep 14, 2020

Not the direct answer to your question, but it will be better to create an UDT with datatype BOOL[32].
Then create a tag using that data type. It will use 4 bytes only and allow COP to and from DINT.

Phrog30 · Sep 14, 2020

contr_conn said:
not the direct answer to your question, but it will be better to create an udt with datatype bool[32].
Then create a tag using that data type. It will use 4 bytes only and allow cop to and from dint.

+1

GaryS · Sep 14, 2020

i don't see the problem I do it all the time with both INT and DINT
the addressing is simple DINT_TST.1 both as an input and output
they are stored in the plc as an array of bits 0-31 but the tag is a DINT
but them all tags are stored as an array of bits in the plc
on you example you are trying to address them as an array but the addressing is as a bit
they can be addressed as either a bit (using the . ) or as a word
bit one would be .1 or as a word value 2

Convert DINT to BOOL[32] and then back to DINT?

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