Hey Denis,
My knowledge of Siemens is fairly limited, but I recall S7 protocol has
support for %DB fields.
Their syntax is described as:
DB{Data-Block-Number}.DB{Short-Data-Type-Code}{Start-Byte-Address}.{Bit-Offset}:BOOL[{Count}]
DB{Data-Block-Number}.DB{Short-Data-Type-Code}{Start-Byte-Address}:{Data-Type-Code}[{Count}]
Shorter syntax is available:
DB{Data-Block-Number}.{Start-Byte-Address}.{Bit-Offset}:BOOL[{Count}]
DB{Data-Block-Number}.{Start-Byte-Address}:{Data-Type-Code}[{Count}]
DB{Data-Block-Number}.{Start-Byte-Address}:STRING({string-length})[{Count}]
Have you tried these?
Best,
Łukasz
On 05.04.2021 12:31, Denis Leite wrote:
> Hi,
>
> First of all, excellent work! We´re using PLC4x in innovative projects with
> 2 different multinational factories.
>
> The reason I am writing is that we couldn´t find on the documentation if
> it´s possible to read a full DB(data block) froma Siemens PLC.
>
> Regards,
>
