Does anyone know of an available document to understand Siemens s7/300 MPI Communication protocol ? I need it for write Labview driver.

 

Try looking on the following sites for the information you need.

"http//www.process-informatik.de":http//www.process-informatik.de "

"http//www.runmode.com":http//www.runmode.com

 

see "http://www.runmode.com":http://www.runmode.com

 

thanks for your guide.
but there is no enough information.

Amir Latifi.

 

If you want to talk directly to the MPI interface I cannot help you.
I wrote a communication library to let a PC talk to the PLC via MPI adapter cable.
It is available from:
"libnodave.sourceforge.net":http://libnodave.sourceforge.net
See the commented source for details.
But be warned, I just analyzed the communication and copied whole sequences of characters into
the source without really understanding what they mean.
HTH

 

Take a look at

"http://sourceforge.net/projects/libnodave/":http://sourceforge.net/projects/libnodave/

regards
Luca Gallina

 

Hello,
MPI is a Profibus Master protocoll. siemens doen´t support this protokoll for external use.
I have designed a mpi chip, where you can connect via an seriell line with an open protokoll.

Please take a look to
www.schildknecht.info
and
http://www.schildknecht.info/prodbrid.htm

(February 2003 site also in english)

Chip is about 50.- Euro /pcs