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Split from Recommended communication converter Profibus to Profinet.

amit_iet

How we can communicate two different PLC, one PLC on Profinet and another PLC on profibus.

 Hello,

 depend what you have to do:

 https://support.industry.siemens.com/cs/de/de/view/78028908/en

 Please explain what CPU you have: S7-200/300/400/1200/1500, are both master or master /slave?

Hello amit;

What CPUs are you working with?

The basic suggestion would be to set both PLCs with the hardware that allows direct communication between them.

If for example your Profibus only CPU is a S7-300, you could purchase a CP 343-1 Lean module, the least expensive Ethernet processor for that PLC family, that would allow you to connect over a Profinet network with your second CPU. 

Or you could choose to insert a IE/PB coupler between thé 2 CPUs, as suggested  earlier by Heisenberg2 in the original thread.

We need more information to give you better advice.

Hope this helps,

Daniel Chartier