Siemens 6GK7343-1CX10-0XE0 Communications Processor

Siemens CP 343-1 Lean communications processor (6GK7343-1CX10-0XE0) enables the SIMATIC S7-300 to connect to Industrial Ethernet via TCP/IP and UDP, including multicast, fetch/write, and S7 communication (server), with a PROFINET IO device integrated and an ERTEC 200 two‑port switch for onboard Ethernet routing. It provides 2x RJ45 LAN ports at 10/100 Mbps and SNMP diagnostics, plus LAN-based initialization and module exchange without PG. Key electrical and environmental specs include IP20 protection, power loss about 5.8 W, backplane supply around 5 V at 0.2 A, and external 24 V DC supply at approximately 0.16–0.2 A; operating temperature ranges from 0 to 40 °C (vertical mounting) or 0 to 60 °C (horizontal busbars), with storage from -40 to 70 °C and up to 95% relative humidity at 25 °C. The product designation 6GK7343-1CX10-0XE0 identifies this CP 343-1 Lean module, designed to extend S7-300 networks by providing TCP/IP/UDP communication, S7 server capabilities, and integrated PROFINET IO device functionality alongside a built‑in ERTEC 200 switch.