6GK7443-1EX20-0XE0 | Siemens | Communications Processor CP 443-1

Product Overview

The Siemens 6GK7443-1EX20-0XE0 is a communications processor (CP 443-1) for the SIMATIC S7-400 series. It enables connection to industrial Ethernet networks using ISO, TCP/IP, and UDP protocols, supporting S7 communication, fetch/write, SEND/RECEIVE, and PROFINET IO Controller functions. This module provides reliable, high-speed data exchange for complex automation systems.

Key Features and Benefits

This CP 443-1 supports DHCP, SNMP V2, web-based diagnostics, and secure access via an integrated IP access list. It features a real-time switch ERTEC 400 and two RJ45 LAN ports with 10/100 Mbit/s transfer rate for seamless network integration. The module allows up to 128 active connections in multi-protocol mode and supports a maximum of 14 units per CPU. Its compact design (21 x 2.5 x 29 cm) and lightweight construction (0.7 kg) simplify installation in control cabinets.

Technical Specifications

• Article Number / Part Number: 6GK7443-1EX20-0XE0

• Manufacturer: Siemens

• Product Type: Communications Processor CP 443-1

• Protocols Supported: ISO, TCP/IP, UDP, S7 communication, PROFINET IO Controller

• Multicast Support: Yes, with and without RFC1006

• Security: IP access list for access protection

• Interfaces: 2x RJ45 LAN, 10/100 Mbit/s

• Transfer Rate (1st Interface): 10–100 Mbit/s

• Number of Active Connections: 128 (multi-protocol mode)

• Maximum Units per CPU: 14

• Dimensions (L x W x H): 21 x 2.5 x 29 cm

• Weight: 0.7 kg

• Shipping Weight: 2 kg

Applications

The Siemens 6GK7443-1EX20-0XE0 is ideal for industrial automation and process control applications requiring high-speed, secure Ethernet connectivity. It supports S7-400 systems in multi-protocol networks, PROFINET IO operations, and real-time industrial communication.