Siemens 6GK7343-1EX30-0XE0 SIMATIC S7-300 CP 343-1 PROFINET Module

Global PLC Spare HUB's Insight

The Siemens 6GK7343-1EX30-0XE0 represents a vital link in industrial networking architecture.

This high-performance SIMATIC S7-300 CP 343-1 communications processor bridges field-level control with enterprise Industrial Ethernet networks.

Engineered with the integrated ERTEC 200 chip, this module functions seamlessly as both a PROFINET IO controller and device.

The hardware delivers exceptional determinism for time-critical automation tasks by supporting Media Redundancy Protocol (MRP).

Control engineers select this communication processor to offload intensive network management tasks from the central CPU.

This offloading ensures optimized cycle times and robust data throughput across demanding factory plant floors.

Product Overview

The Siemens 6GK7343-1EX30-0XE0 is a rugged SIMATIC S7-300 CP 343-1 Industrial Ethernet communications processor.

It connects your S7-300 controller to advanced PROFINET networks via TCP/IP and ISO protocols.

The module features an integrated 2-port switch for flexible and cost-effective network topology design.

It supports S7 communication, fetch/write operations, and open SEND/RECEIVE communication protocols.

This hardware enables smooth data exchanges with computers, HMI systems, and third-party PLCs.

This communication unit provides essential bandwidth and reliability for modern manufacturing automation lines.

Technical Specifications

• Brand: Siemens
• Model: 6GK7343-1EX30-0XE0
• Product Series: SIMATIC S7-300
• Module Type: CP 343-1 Communications Processor
• Transfer Rate: 10 Mbit/s to 100 Mbit/s auto-sensing capabilities
• Electrical Connections: Two RJ45 Industrial Ethernet interface ports
• Power Supply Connection: 2-pole pluggable terminal block connector
• Backplane Bus Supply Voltage: 5 V DC input
• Backplane Bus Current Consumption: 0.2 A typical value
• External Supply Voltage: 24 V DC Rated Value
• External Voltage Tolerance Range: -15% to +20% variance
• External Current Consumption: 0.16 A typical, 0.2 A maximum
• Total Module Power Loss: 5.8 W energy consumption
• Horizontal Mounting Operating Temperature: 0 °C to 60 °C maximum
• Vertical Mounting Operating Temperature: 0 °C to 40 °C maximum
• Storage and Transport Temperature: -40 °C to +70 °C range
• Maximum Relative Humidity: 95% at 25 °C without condensation
• Protection Class Rating: IP20 enclosure protection level
• Module Width: 40 mm single-width slot design
• Module Height: 125 mm physical height
• Module Depth: 120 mm physical depth
• Net Weight: 0.22 kg lightweight design
• Open Communication Connections: 16 maximum via SEND/RECEIVE blocks
• Data Volume per ISO Connection: 8 Kibyte maximum capacity
• Data Volume per TCP Connection: 8 Kibyte maximum capacity
• Data Volume per UDP Connection: 2 Kibyte maximum capacity
• Multicast Stations: 16 stations maximum configuration
• S7 Communication Connections: 16 maximum concurrent connections
• Multi-Protocol Mode Connections: 32 active connections maximum
• PROFINET IO Devices per Controller: 32 devices maximum load
• PROFINET Lines per Rack: 1 line maximum restriction
• IO Controller Input Data Volume: 1 Kibyte total maximum limit
• IO Controller Output Data Volume: 1 Kibyte total maximum limit
• IO Device Input Data Volume: 512 byte total maximum limit
• IO Device Output Data Volume: 512 byte total maximum limit
• Submodule Consistency Area Data: 240 byte maximum per submodule
• Submodules per IO Device: 32 submodules maximum count
• Management Network Protocols: Full support for SNMP v1, DCP, and LLDP
• Time Synchronization: Integrated NTP and SICLOCK protocols
• Access Control: IP-based Access Control List (ACL) protection

Installation Guide

• Turn off the main power supply before inserting the communication module.
• Hook the module onto the standard S7-300 DIN rail system securely.
• Swing the module down and secure the fixing screw tightly into place.
• Connect the 24 V DC power supply to the pluggable terminal block.
• Verify correct polarity before turning on the external electrical supply.
• Insert the industrial Ethernet cables into the RJ45 ports until they click.
• Maintain proper clearance distances above and below the module for natural cooling.

Commissioning & Maintenance Convenience

• Configure the module easily within STEP 7 V5.4 SP2 or TIA Portal V11.
• Initialize the module over the local area network using factory default settings.
• Run advanced web-based diagnostics through a standard internet browser window.
• Switch off unused physical ports to prevent unauthorized local network access.
• Replace modules quickly without rewriting your entire central control program.
• Utilize integrated front-panel LEDs for instant status tracking and error verification.

Compatibility & System Requirements

• Designed for use with Siemens SIMATIC S7-300 central processing units.
• Requires STEP 7 V5.4 SP2 or higher standard engineering software.
• Fully compatible with STEP 7 Professional TIA Portal V11 or higher.
• Works seamlessly alongside standard PROFINET IO devices and network controllers.
• Integrates with industrial network switches via standard LLDP and DCP protocols.

Target Device Suitability

• Siemens SIMATIC S7-300 CPU 315-2 DP
• Siemens SIMATIC S7-300 CPU 317-2 DP
• ET 200M distributed I/O interface hardware modules
• Siemens SITOP 24V DC industrial power supply units
• Industrial HMIs and computerized SCADA control station PCs

Advanced Diagnostic Capabilities

• Web-based diagnostic interface displays real-time network status and internal fault logs.
• Identification and Maintenance data (I&M0 to I&M1) reveals physical module information.
• Integrated status LEDs indicate link speed, active data transmission, and system faults.
• SNMP v1 support allows seamless integration into standard network management software tools.
• Detailed diagnostic buffer reads provide precise fault location during network interruptions.

Typical Application Scenarios

• High-speed data transmission between S7-300 controllers and centralized SCADA software.
• Real-time coordination of distributed manufacturing lines utilizing PROFINET IO architecture.
• Assembly plant automation requiring Media Redundancy Protocol for uninterrupted communication operations.
• Enterprise network integration using standard TCP/IP and ISO IT protocols.
• Machinery synchronization across complex high-speed packaging lines using IRT communication.

Packaging List & Warranty Terms

• One brand new Siemens 6GK7343-1EX30-0XE0 CP 343-1 module
• One 2-pole pluggable power supply terminal block connector
• Official hardware installation instruction documentation leaflet
• 12-Month Comprehensive Warranty coverage starting from day of delivery
• Warranty protects against all verified manufacturing defects under standard operating conditions

Shipping & Logistics Information

• Fast parcel dispatch within 24 to 48 hours from order confirmation.
• Worldwide global express delivery via reliable FedEx, UPS, and DHL networks.
• Secure tracking numbers provided instantly to customers upon shipment processing.
• Industrial-grade protective packaging prevents transit vibration and physical shock damage.

Global PLC Spare HUB Review

The Siemens 6GK7343-1EX30-0XE0 remains an industry favorite for expanding older control systems into modern networks.

Its dual-port design eliminates the need for external network switches, saving valuable control cabinet space.

The hardware manages multi-protocol traffic efficiently without degrading the performance of the main CPU.

It provides highly dependable uptime in harsh, high-interference industrial manufacturing environments.

For facilities standardizing on PROFINET infrastructures, this module provides required reliability, longevity, and communication speed.

Buying Guide

• Check your software version before purchasing this communications module.
• Ensure you use STEP 7 V5.4 SP2 or TIA Portal V11 minimum.
• Count your intended node connections to fit the 32-connection multi-protocol limit.
• Confirm that your panel layout leaves room for the 40mm width footprint.
• Verify your external power supply handles the 24 V DC current requirements.

Frequently Asked Questions

What is the primary function of this module?

The module connects S7-300 PLCs to Industrial Ethernet and PROFINET networks.

Can I use this communication processor as a PROFINET IO controller?

Yes, it functions simultaneously as a PROFINET IO controller and an IO device.

Which programming software is required for configuration?

You need STEP 7 V5.4 SP2 or TIA Portal V11 or higher.

Does the module support network redundancy?

Yes, it supports Media Redundancy Protocol (MRP) for ring topology layouts.

Can this card handle time synchronization across the network?

Yes, it supports NTP and SICLOCK protocols to synchronize plant equipment.

My PLC application requires high-speed motion control. Can this module handle it?

Yes, it supports PROFINET IRT which provides deterministic timing for precise automation.

How do I reset the module if I lose the IP address?

You can use the Primary Setup Tool or STEP 7 via the DCP protocol over LAN.

Does this module require an external network switch?

No, the integrated 2-port ERTEC 200 switch allows you to build linear or ring topologies directly.

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