Hi All,

I would like to know your opinion of which is the best instruction to use to write a word type data array to an output data area e.g.% QW800,% QW801,% QW802 etc. etc. assigned in a PN / PN Coupler.

I do the follow in  STL 

L DB900.DBW0

T %QW800

L DB900.DBW2

T %QW802

and so on for the rest of the word array of the DB900

So I did try to use the MOVE_BLOCK and others instruction MOVE but my problem is the error on out of move instruction because I don't know how write the right syntax to the %QW area definied in the PN/PN Coupler.

Please can you tell me how write the right code using move instruction, without use several instruction of L DBxyz.DBW0 ==> T %QWxyz

Thanks in advance

cagliostro83

Hi All,

I would like to know your opinion of which is the best instruction to use to write a word type data array to an output data area e.g.% QW800,% QW801,% QW802 etc. etc. assigned in a PN / PN Coupler.

I do the follow in  STL 

L DB900.DBW0

T %QW800

L DB900.DBW2

T %QW802

and so on for the rest of the word array of the DB900

So I did try to use the MOVE_BLOCK and others instruction MOVE but my problem is the error on out of move instruction because I don't know how write the right syntax to the %QW area definied in the PN/PN Coupler.

Please can you tell me how write the right code using move instruction, without use several instruction of L DBxyz.DBW0 ==> T %QWxyz

What you are looking for, is called a Pointer. You just need to use BLKMOV to handle this. The Pointer format is: P#Q 800.0 BYTE 16. Byte 16 defines that 16 bytes is being moved, starting from QW800.

cagliostro83

I do the follow in  STL 

 And which S7 family do you use? 300/400 or 1500?

cagliostro83

Thanks for suggest, so I did try but always same error as per screenshot attached

TIA Information system:

"The specified data types can only be used as elements of an ARRAY structure."  

Which means no ANY pointers.

You could use BLKMOV. It's in Legacy folder, i.e. stuff which should have already been forgotten and never used again.

Nowadays more consistent approach is possible.

Ok, problem solved as per your suggestion.........

I used BLKMOV and working fine.

Thanks

Od zawsze twierdzę, że podejście SIEMENS-a do zmiennych jest dla masochistów, a Twoja odpowiedź tylko to potwierdza mistrzu.

__________________

I have always said that the SIEMENS approach to variables is for masochists, and your answer only confirms it, master.