sudheer .sodima

hai swamy sir
i am new for simens . i dnt knw how to communicat s7300 through th mpi or profibus .
plz hlp me

First, how are you planning to connect bwteween your PC and the S7 CPU for MPI/Profibus links? What hardware do you plan to use:
Components for setting up a communication between a PG/PC and a SIMATIC S7 system

Once you have selected and installed the correct hardware, here are some tips on connections (“Setting the PC/PG interface” is critical):
How can you set up the online connection again between the PG and the CPU?

Try the suggestions in these FAQs and come back to the forum with the results.

Hope this helps,
Daniel Chartier