Connection 2 PLC and 2 HMI in different locations

[pawel_kowalski_]

Hi 

I need advice on how to do a connection like that :

The PLC is TM251MESE, HMI's is XBTGT4330 and XBTGT7340
The buildings are about 200 meters apart, the biggest problem is how to add IP addresses from different network in HMI's.
I thinking about using IP Routing on TM521 but I don,t exactly how does work. 
If there was a possibility add addresses from the same network in ETH1 and ETH2 thats solved the problem, but the addresses must be different.

[pawel_kowalski_]

I need advice on how to do a connection like that :

The PLC is TM251MESE, HMI's is XBTGT4330 and XBTGT7340
The buildings are about 200 meters apart, the biggest problem is how to add IP addresses from different network in HMI's.
I thinking about using IP Routing on TM521 but I don,t exactly how does work. 
If there was a possibility add addresses from the same network in ETH1 and ETH2 thats solved the problem, but the addresses must be different.