Siemens Communications processor CP 343-1 Part number 6GK7343-1CX10-0XE0

Product Overview

The Siemens SIMATIC NET Communications Processor CP 343-1 Lean (SKU: 6GK7343-1CX10-0XE0) enables efficient integration of the SIMATIC S7-300 automation system into Industrial Ethernet networks. It features dual RJ-45 ports with an integrated 2-port switch and supports communication protocols such as TCP/IP, UDP, Multicast, SEND/RECEIVE (with and without RFC 1006), Fetch/Write, S7 server communication, and PROFINET IO Device functionality.

Key Features

• Connects S7-300 systems to Industrial Ethernet via TCP/IP and UDP
• Supports Multicast, SEND/RECEIVE with and without RFC 1006, and Fetch/Write
• Acts as a PROFINET IO device with two RJ-45 ports (10/100 Mbit/s)
• Integrated 2-port switch (ERTEC 200) for flexible network configuration
• Supports module replacement without a programming device
• Enables SNMP diagnostics and initialization via LAN

Technical Specifications

• Product Type: Communications Processor CP 343-1 Lean
• Article Number: 6GK7343-1CX10-0XE0
• Interfaces: 2 × RJ-45 ports (10/100 Mbit/s)
• Supply Voltage: 24 V DC (external)
• Current Consumption (typical): 0.16 A at 24 V
• Power Loss: approx. 5.8 W
• Module Format: Compact S7-300 single width, 40 mm wide
• Operating Temperature: 0 °C to +40 °C (vertical installation), up to +60 °C (horizontal installation)
• Storage/Transport Temperature: –40 °C to +70 °C
• Protection Class: IP20
• Weight (approx.): 0.3 kg

Compliance & Certifications

• Manufactured in Germany
• RoHS compliant
• WEEE take-back obligation applies

Applications

Ideal for connecting SIMATIC S7-300 controllers to Industrial Ethernet or PROFINET networks. Commonly used in automation systems requiring fast, reliable communication, network diagnostics, and flexible integration in machine control and industrial networking applications.