Siemens 6GK7343-1HX00-0XE0 Communications Processor

High-Performance Network Connectivity for S7-300

This communications processor connects S7-300 PLCs directly to industrial Ethernet networks. It handles large data volumes with minimal load on the CPU. Many plants use this module for plant-wide data exchange and remote access. The unit enables seamless integration with enterprise-level IT systems.

Technical Specifications

Parameter	Specification
Model	6GK7343-1HX00-0XE0
Dimensions	125 mm × 130 mm × 70 mm (W × H × D)
Weight	0.35 kg
Power Supply	24 V DC ±20%
Power Consumption	3.5 W typical
Communication Interface	1 × Ethernet (RJ45, 10/100 Base-T)
Supported Protocols	ISO-on-TCP, TCP/IP, UDP, S7-communication, SEND/RECEIVE, FETCH/WRITE
Number of Connections	Up to 8 simultaneous connections
Data Transfer Rate	10/100 Mbps (auto-negotiating)
Address Space	2 KB input / 2 KB output buffer
Diagnostics Buffer	512 entries (time-stamped)
Configuration	STEP 7, NCM S7, Web-based management
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +70°C
Humidity Range	5% to 95% RH (non-condensing)
Protection Class	IP20
Status Indicators	1 Power LED, 1 Link LED, 1 Rx/Tx LED, 1 Fault LED
Certifications	CE, UL, cULus, ATEX, FM

Ethernet Connectivity and Network Standards

This processor integrates S7-300 controllers into 10/100 Mbps Ethernet networks. The RJ45 port supports auto-negotiation for seamless network integration. It complies with IEEE 802.3 standards for universal compatibility. This connectivity enables communication with HMI panels, drives, and SCADA systems.

Protocol Support and Data Exchange

The module supports multiple protocols including ISO-on-TCP and TCP/IP. It handles S7-communication for direct CPU-to-CPU data transfer. SEND/RECEIVE services enable user-defined communication blocks. FETCH/WRITE functions allow external devices to access controller memory directly.

Connection Management and Concurrent Operations

This processor maintains up to 8 simultaneous communication connections. Each connection operates independently without performance degradation. This concurrency supports multiple master stations, HMIs, and programming devices. The module manages these connections efficiently without overloading the CPU.

Buffer Capacity and Throughput

The address space provides 2 KB buffers for both input and output data. These buffers accommodate real-time data exchange with connected partners. The module transfers data cyclically without manual intervention. Sufficient buffer depth prevents overflow during high-communication loads.

Power Supply and Energy Consumption

The unit draws a modest 3.5 W from the 24 V DC supply. This low consumption supports dense PLC rack configurations. The processor contains no internal batteries or storage capacitors. Power comes exclusively from the S7-300 backplane for stable operation.

Mechanical Construction and Physical Attributes

This communications processor measures 125 mm wide and weighs only 0.35 kg. The slim profile saves valuable rack space in control cabinets. IP20 protection restricts access to live parts within enclosures. DIN rail mounting and front connectors facilitate quick installation.

Diagnostic Capabilities and Status Feedback

A diagnostics buffer records up to 512 time-stamped events for analysis. Four LEDs display power status, link activity, data traffic, and faults. The module reports diagnostic information to the CPU during runtime. Web-based management provides remote access for configuration and diagnostics.

Safety Certifications and Approvals

The 6GK7343-1HX00-0XE0 holds CE, UL, cULus, ATEX, and FM certifications. These approvals permit use in hazardous locations and industrial environments. Each unit undergoes stringent functional testing before shipment. This quality commitment ensures reliable communication in critical operations.