Siemens 6GK7 443-1EX20-0XE0 Industrial Ethernet PLC Module

Siemens CP 443-1 EX20-0XE0 (6GK7 443-1EX20-0XE0) is an Industrial Ethernet communications processor for SIMATIC S7-400 systems, with firmware version 2.1, featuring two 10/100 Mbps RJ45 Ethernet interfaces and an integrated ERTEC 400 real-time switch. It enables S7-400 communication over Industrial Ethernet via ISO TCP/IP and UDP, including RFC1006, S7–routing, and fetch/write operations with multicast support. The module also functions as a PROFINET IO Controller, and provides DHCP and SNMP v2, a web interface for diagnostics, LAN-based initialization, and an IP access list for access control. Designed to connect a SIMATIC S7-400 CPU to an Industrial Ethernet network, this CP 443-1 EX20-0XE0 delivers standard S7 network services alongside robust Ethernet switching capabilities, making it suitable for integrating legacy S7-400 controllers into modern Ethernet infrastructures without sacrificing S7 communication reliability.