Dear all,

Who can help my problem, I using CPU 317 2DP with three DCM drive and CU320 2DP with s120 two power AC drive with profibus communication. I have problem(no communication only CU320 2DP. The rest DCM drive is ok. I check hard ware configuration with on line, CU320 2DP is one red cross line and module information show "DP slave not accessible by means of the bus" and general show "Insert and configure module types are not same". "Expected type   DP slave (6SL3 040-1MA00-00X"

I using CU320 2DP CF card is 4.5 V, I already check profibus cable and connector ok.

What should I check, please suggest me.

Dear Christoph,

Thanks for your advise. Now I solve the this problem.

[snip] ...

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 split to a separate thread with the subject Ethernet connection with S7 300 to DCM drive.