CP 343-1 SIMATIC S7 300 PLC 6GK7343-1CX10-0XE0 SIMATIC NET

SIMATIC S7-300 PLC 6GK7343-1CX10-0XE0 SIMATIC NET CP 343-1

I. Product Description:

The SIMATIC 6GK7343-1CX10-0XE0 is a SIMATIC NET CP 343-1 Lean communication processor. It is a dedicated communication module installed on a SIMATIC S7-300 PLC, designed to connect the S7-300 to an Industrial Ethernet (PROFINET) network. Its core purpose is to serve as a cost-effective networking solution for S7-300 systems

Equipped with its own processor, it can independently handle communication tasks on the Industrial Ethernet, thereby significantly reducing the load on the S7-300 CPU and allowing the CPU to focus on executing user programs.

II. Product Specifications:

SIMATIC 6GK7343-1CX10-0XE0｜SIMATIC S7-300 CP 343-1 Lean Communications Processor

Ethernet Connector: RJ45;
Transmission Rate: 10/100 Mbit/s;
Communication Protocols: TCP/IP, ISO-on-TCP, S7 communication, and SEND/RECEIVE;
S7 Communication: Supported;
SEND/RECEIVE Communication: Supported;
Open Communication: Supported;
TCP/IP Communication: Supported;
ISO-on-TCP Communication: Supported;
PROFINET IO Controller: Not supported;
PROFINET IO Device: Not supported;
Web Diagnostics: Supported;
NTP Time Synchronization: Supported;
DHCP: Supported;
Maximum Number of Communication Connections: Up to 8, depending on communication type and configuration;
Maximum SEND/RECEIVE Connections: Up to 8;
Maximum S7 Connections: Up to 8;
Maximum Data Length: Up to 8 KB per communication job, depending on protocol and configuration;
External Supply Voltage: 24 V DC;
Permitted External Supply Voltage Range: 20.4 to 28.8 V DC;
Backplane Bus Supply: 5 V DC;
Backplane Bus Current Consumption: Approximately 100 mA;
External Current Consumption: Approximately 150 mA at 24 V DC;
Typical Power Loss: Approximately 4 W;
Electrical Connection for Power Supply: 2-pole pluggable terminal block;
Electrical Isolation: Ethernet interface electrically isolated from the backplane bus;
Diagnostic Functions: Module, Ethernet, and communication diagnostics supported;
Status Indication: LED status indication for operating and communication status;
Engineering Software: STEP 7 / TIA Portal;
Configuration: Parameterizable through the STEP 7 engineering environment;
System Compatibility: SIMATIC S7-300 automation systems;
Mounting: Installation on the S7-300 mounting rail;
Module Width: Single-width S7-300 module;
Protection Rating: IP20;
Operating Temperature: 0 to 60 °C;
Storage / Transport Temperature: -40 to 70 °C;
Maximum Relative Humidity: 95% at 25 °C, non-condensing;
Dimensions (W × H × D): Approximately 40 × 125 × 120 mm;
Net Weight: Approximately 0.25 kg;
Typical Applications: Industrial Ethernet communication, S7-300 PLC networking, HMI communication, SCADA systems, machine automation, production lines, data exchange between PLCs, and industrial control systems

III. Technical Parameters:

communications processor CP 343-1 Lean for connection of SIMATIC S7-300 to Industrial Ethernet via TCP/IP and UDP, multicast, send/receive with and without RFC1006, fetch/ write, S7 communication (server), PROFINET IO device integrated 2-port switch ERTEC 200, module exchange without PG, SNMP diagnostics, initialization via LAN, 2x RJ45 connection for LAN with 10/100 Mbps.

IV. Industries Served:

In applications such as automotive tooling and precision machining, it connects legacy 840D CNC systems with upper-level SCADA/MES systems to resolve data silos.

In automated production lines—such as those in battery manufacturing—that require capacity expansion, it enables data exchange between legacy S7-300 PLCs (which only support MPI/DP) and newly added Ethernet devices, such as S7-1200 PLCs and touchscreens.

V. Customer Case Studies:

Customer Industry: Automated Manufacturing Plants

Products Purchased: SIMATIC ET 200SP Series, SIMATIC S7-1200 Series, SIMATIC S7-1500 Series,

Contract Value: 800,000+

1,Addressing the pain points of cross-border transactions for clients in Belarus, we leveraged the localized payment channels and practical experience we’ve accumulated over many years of deep engagement in the Russian-speaking region. This enabled us to successfully overcome the limitations of conventional cross-border payment channels, efficiently complete the entire closed-loop payment process, and ensure the smooth execution of this transaction.

2,Previously, this client had been unable to source products directly from the Chinese market due to cross-border settlement obstacles. During this collaboration, the client not only highly commended the genuine quality and supply efficiency of the SIMATIC industrial automation products delivered but also, based on the smooth collaboration and mutual trust between both parties, formally signed a long-term strategic cooperation agreement, laying a solid foundation for continued, stable bulk procurement in the future.

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