Dear colleagues,

Unfortunately I am not able to find out how MW230 receives the speed value from another CPU. I checked all places of using of all communication  SFC14, 15, 68 what I have in SW.

Could be communication established by the other methods exclude FC/FB or SFC/SFB ?

I see in communication table 1 for PG, 2 for OP, S7 basic for PUT what I see, 2 other for OPC and Intouch communications. Nothing else.

Next I check ProoToll for OP communication but in the tags I do not see any declaration for this area (+/- MW230).

Intouch has nothing to do with this memory area .

I would like to ask support, sorry.

Many thanks,

but it's not so easy. Of course I did this way You wrote. But this SW is 30 years old and OLD SCOOL is pretty seen here. Code designer had to take into account HW limits and I see many code pices what is BAD practics for today's rules. Another words, I see in the references only one place for MW230 and it's READing, sorry.

Finaly it became clear.

OLD SCOOL MPI bus has a GLOBAL DATA feature. GLOBAL DATA exchange is working without any FC/FB calls and only GLOBAL DATA table's definition is needed.

Entry Id : 21537047

MPI on ProfiBus has rhis very useful property but all modern CPU do not have MPI any more.

With best regards,