The Siemens CP 343-1 PN (6GK7343-1HX00-0XE0) is a communications processor designed for connecting SIMATIC S7-300 to Industrial Ethernet with PROFINET functionality. It supports TCP/IP, S7 communication, fetch/write, SEND/RECEIVE, and operates at 10/100 Mbit/s.

Interfaces: 1x RJ45 port for Industrial Ethernet.

Supply Voltage: 24V DC (external).

Power Consumption: 5W.

Operating Temperature: 0°C to 60°C.

Protection Class: IP20.

Dimensions: 40mm × 125mm × 120mm.

Weight: 0.6 kg.

Mounting: S7-300 rail mounting.

Supported Protocols: PROFINET, TCP/IP, S7 communication.