PGA970: With 5-wire LVDT, where should be connected S1N, S2N and the secondary coil ground line to?

Part Number: PGA970EVM

Hello.

I am thinking about how to use PGA970EVM with 5 wire LVDT.

I mean PGA970EVM  web page describes that it is capable for 4, 5, 6 wire LVDT types

For instance, I could not find how to connect secondary coil ground line(Refer to the diagram below. It is green and blue line) to PGA970EVM. 

In addition, any special configuration for PGA970EVM( e.g. registers, jumpers)  is needed?

For example, I wonder if  do I have to set S1_SEM to Single-end.  

I would appreciate it if you could give me advice. 

Thank you.