I have a issue

I have 3 plc with ip address   plc 1 = 192.168.0.2

                                               plc 2 = 192.168.0.3

                                               plc 3 = 192.168.0.4

Now i add a new plc with difference address plc 4 = 192.168.2.1  because this is  from a different network.

-To my pc i have 2 ethernet card   

                                                    1 card has  ip 192.168.0.1  and plc1,2,3  work normally and i have communication. 

 BUT 

The problem is in the fourth plc i cant communicate with scada

Do you have any idea?

Hello

Have you created a communication driver for each network card? 

Note that, when you create a communication driver, you must select the application access point, which must match the one defined in the PG/PC Interface Setup.