MatthewDuhamel

Sorry I should have been more concise with my question, I am using Sysmac Studio for my programming and need to add a function within the program to choose which controller to connect to. For example if I have three controllers connected over ethernet IP (192.168.30.5, 192.168.31.5, 192.168.32.5) and I want 30 to only communicate with 32, how could I set this up in Sysmac Studio to "select" which controller to communicate with? Is it possible create a dynamic EIP configuration, where the IP in the configuration can change automatically based on user input? 

I currently have two NX1P2 PLCs communicating back and forth over ethernet IP. However, I am looking to expand this project across multiple PLCs and I need a way for one PLC to see all other PLCs that are connected to the LAN network via Ethernet IP. I can use the _EIP_EstbTargetSta[255] function which is a boolean value that returns true if there is an established connection  to a device where the last octet of the IP is specified in the array [255].  This function works well but my PLCs are configured with the subnet 255.255.0.0. And I need to see the connection status based on the third octet. Is there an existing function that I can use, or is there a way to view the full structured text for the _EIP_EstbTargetSta[255] function and modify it to suite my specific application?