We are searching a MPI protocol doccumentation in order to communicate with a S7/300 PLC. Anybody knows a site where we can consult? Thank you

 

Please use http://www.google.com to do your searches before you use this list server. My search for "S7 MPI protocol" gave me many hits including this one:
http://www.ats.nl/english/products/dde/s7mpi/infos/s7mpiinfo.html

Dick Caro
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Richard H. Caro, CEO
CMC Associates
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Tel: +1.978.635.9449 Mobile: +1.978.764.4728
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Why re-invent the wheel

Siemens has a plug in MPI card both in the PCMCIA and PCI format.
I do not remember the numbers off the top of my head but I believe they are the CP6511 and CP5511 cards, I have both I just do not remember which one is which.

Siemens also has a software package for talking to their PLC’s from a PC it uses DDE
And they have their own pre built controls that respond to events from both directions.

For their CNC product line, which I am most familiar with, they call the software "Advanced HMI Programming Package" I do not know what they call the PLC only version but if you call Johnson City I am sure you can get help there.

 

dear ,

These protocols are developed by siemens for their plc's only. so it is difficuilt to get details for the same

bye
vijay