Config OPC UA with two plc

Hi all,
i'm researching about OPC UA.I used simulation plc sim advanced in plc s7 1500 is OPC UA server and test in app client.It's work.
Now I want to read and write data between two plc.server and client.
How to config to get data in server and client?

S7 1500 can only be an OPC UA Server right now. I'm assuming client functionality will come with the next version, whenever that comes out.

If you need to talk PLC to PLC, then I'd recommend I-Device, an S7 connection, or TCP.

Thanks for your answer.Having a good day!