Hi,

I'm trying to establish Profibus communication between CPU S5-115U via IM308C as master to CPU S7-400 as slave via MPI/DP port.

This communication works find when I use DP port (X2) as slave (but on customer site, this port is already used as master). When I try to do the same communication using MPI/DP (X1) port configures as DP slave, it doesn't work (DP port (X2) is configured as master).

Is it possible to use MPI/DP port as slave with IM308C as Master ?

Any ideas ?

Regards.

Hello Panov69,

Perhaps you can tell us which S7-400 CPU you are  using?

Best regards,

Wizard

Hi Wizard,

CPU 6ES7414-3XM05-0AB0

Regards.