i tried to control Lenze ethernet IP drives with S7-1510SP.

Is it possible to use PN/MF coupler to link the plc with 6 drives or more?

I cannot find any documentation that can help me

Hello,

what reason to have connection to drives via Coupler and not directly? I see term Coupler as interconnection of 2 independed networks where Masters are existed on both sides generally and data need to be exchange between both sides. I think that documentation to Coupler can show clear description of functionality and different examples of networking situations.

Search this forum for: Ethernet IP scanner

There's a library that you can use to connect Ethernet IP devices to a 1500 plc. This was just discussed yeasterday, in this very same thread.

EtherNet/IP Scanner – Connecting third party I/O’s using EtherNet/IP