jbhee

Thank for your answer, in fact I have a network card with 4 Ethernet ports with IP1, IP2, IP3 and IP4. On each port I connect products which have a fixed and unchanged IP, this IP is the same for each product. So I have 4 different networks (IP1 <-> IP, IP2 <-> IP, IP3 <-> IP, IP4 <-> IP) and I must open a TCP communication with each product and the PC. I have used the VI TCP Open Connection but I can put anly the client IP and I don't put the host IP (IP, IP2, IP3 or IP4), so I don't know which product is. Which is code I can use to put the IP client and the IP host to create a TCP connection ? Sorry for my poor english, thank for you answer,

Hi, I have a network card (D-Link DFE-580TX) with 4 Ethernet Ports (IP1, IP2, IP3, IP4), each port are connected with four different clients. Each client are the same IP adresse, is it possible to open a Modbus communication with only one client to indicated the IP host and the IP client ? Thank you for your response,