Siemens 6GK7343-1EX30-0XE0 Ethernet Interface Module

Siemens 6GK7343-1EX30-0XE0 is an Ethernet Communication Processor (CP 343-1) for SIMATIC S7-300 PLC systems, enabling Industrial Ethernet connectivity between the controller and network devices. Installed in control panels, automation systems, and distributed machine networks, it supports high-speed data exchange with SCADA, HMIs, and remote devices. The module provides a single 10/100 Mbps RJ45 Ethernet port and supports TCP/IP, UDP, ISO on TCP (RFC1006), and S7 communication, with web server and diagnostics (model dependent). It mounts in the S7-300 PB-bus rack and offers IP20 protection with an industrial operating temperature range, making it suitable for manufacturing plants, process control, material handling, and building automation where reliable Ethernet network communication is required. Common replacements include Siemens 6GK7343-1EX30-0XE1 and CP 343-1 variants.