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6GK7343-1EX30-0XE0

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Installed in an S7-300 rack, Siemens 6GK7343-1EX30-0XE0 is a CP 343-1 communication processor that links the controller to Industrial Ethernet and PROFINET through two switched RJ45 ports.
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Technical specifications for 6GK7343-1EX30-0XE0

  • Manufacturer:
    Siemens
  • Part Number:
    6GK7343-1EX30-0XE0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    SIMATIC NET CP 343-1 Industrial Ethernet Communication Processor
  • Stock:
    1
  • Ethernet Interface:
    PROFINET interface with integrated 2-port switch
  • Ethernet Ports:
    2 x RJ45
  • Transfer Rate:
    10/100 Mbit/s
  • External Supply:
    24 V DC; 20.4–28.8 V
  • Backplane Supply:
    5 V DC
  • Maximum 24 V Current:
    200 mA
  • Typical Backplane Current:
    200 mA
  • Power Loss:
    5.8 W
  • Protection Class:
    IP20
  • Horizontal Operating Range:
    0 to +60 °C
  • Vertical Operating Range:
    0 to +40 °C
  • Supported Services:
    S7 communication, open communication and PROFINET IO
  • Weight:
    0.485 lbs (0.22 kg)
  • Estimated shipping dimensions:
    4x12.5x12cm
  • Tariff Code:
    85176200
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Network Services Switched Ports Configuration Power and LEDs

Features:

  • The CP 343-1 links an S7-300 CPU to Industrial Ethernet and PROFINET services.
  • Two 10/100 Mbit/s RJ45 ports form an integrated switch on one PROFINET interface.
  • Backplane and external 24 V supplies serve different sections of the communication processor.
CPU communication enters through the S7-300 backplane and leaves through the configured Ethernet service.

The integrated switch forwards frames between its two ports as well as toward the communication processor.

LEDs and diagnostic data identify link, operating and fault conditions without reducing every issue to a CPU error.

The Siemens 6GK7343-1EX30-0XE0 CP 343-1 Communication Processor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK7343-1EX30-0XE0 CP 343-1 Communication Processor Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Mapping controller jobs to Ethernet services

  • S7 communication: The CP transports configured S7 communication jobs between the S7-300 station and Ethernet partners.
  • Open services: Configured TCP, UDP and ISO-on-TCP connections use the same Ethernet interface.
  • PROFINET IO: The processor carries the configured PROFINET IO role and device traffic.
  • CPU exchange: All controller-side data reaches the CP through the S7-300 backplane.

Using two RJ45 sockets on one interface

  • Port pair: Both RJ45 sockets belong to the integrated two-port Industrial Ethernet switch.
  • Link rate: Each port negotiates the documented 10 or 100 Mbit/s Ethernet connection.
  • Line topology: Frames can pass from one port to the other while the CP exchanges its own network traffic.
  • Ring support: Media Redundancy Protocol can be configured when the surrounding topology supports it.

Keeping rack and network parameters aligned

  • Hardware catalog: The loaded project must select the complete 6GK7343-1EX30-0XE0 hardware entry.
  • IP parameters: Device name, IP addressing and subnet values identify the CP on Industrial Ethernet.
  • Connection data: S7, open communication and PROFINET relationships are created for the required service.
  • Download path: Configuration is transferred through the supported station or network commissioning route.

Separating supply faults from network faults

  • Backplane power: The rack provides the 5 V DC path used by the S7-300 interface.
  • External source: A separate front connection supplies the CP from 24 V DC.
  • Link indicators: Port LEDs report link and activity for the individual Ethernet sockets.
  • Module diagnosis: Operating and fault LEDs distinguish processor state from a missing network link.
Description
Installed in a SIMATIC S7-300 station, Siemens 6GK7343-1EX30-0XE0 is a CP 343-1 communication processor that gives the controller an Industrial Ethernet and PROFINET path. Communication jobs move between the CPU over the backplane and the plant network through the processor.

The network side of 6GK7343-1EX30-0XE0 contains two RJ45 ports joined by an integrated 10/100 Mbit/s switch. The pair can continue an Ethernet line or form part of a supported ring without placing a separate switch between the two adjacent network segments.

S7 communication, open TCP/UDP-based services and PROFINET IO share the Ethernet interface of 6GK7343-1EX30-0XE0 according to the loaded hardware and network configuration. Diagnostic records and front LEDs separate module state, link activity and network faults from the S7-300 CPU program.

Two supply paths are required by 6GK7343-1EX30-0XE0: the rack backplane provides 5 V DC for the S7-300 interface, and the front connector receives 24 V DC for the communication processor. The allowable cabinet temperature depends on whether the rack is mounted horizontally or vertically.
Alternative Names
6GK73431EX300XE0 6GK 7343-1EX30-0XE0 6GK7343 1EX30 0XE0 Siemens 6GK7343-1EX30-0XE0 CP 343-1 6GK7343-1EX30-0XE0 S7-300 Ethernet 6GK7343-1EX30-0XE0 6GK7343-1EX3O-0XE0 6GK7343-1EX30-OXE0
Technical notes
Siemens 6GK7343-1EX30-0XE0 is the CP 343-1 version with one PROFINET interface and an integrated two-port switch. Keep the complete suffix when loading or checking the hardware configuration.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why does 6GK7343-1EX30-0XE0 require both rack power and 24 V DC?
The S7-300 backplane supplies the controller interface of 6GK7343-1EX30-0XE0, while the external 24 V connection powers the communication processor section.
Are the two RJ45 sockets on 6GK7343-1EX30-0XE0 separate Ethernet interfaces?
No. The two RJ45 sockets of 6GK7343-1EX30-0XE0 belong to one PROFINET interface with an integrated switch.
What should be checked if 6GK7343-1EX30-0XE0 has rack communication but no Ethernet link?
Check the external 24 V source, Ethernet cable and individual port LEDs on 6GK7343-1EX30-0XE0 in addition to the S7-300 backplane state.
How is 6GK7343-1EX30-0XE0 identified in an S7-300 project?
Select the complete 6GK7343-1EX30-0XE0 hardware entry and retain its exact suffix before assigning network and connection parameters.
Can 6GK7343-1EX30-0XE0 forward frames between its two ports?
Yes. The integrated switch in 6GK7343-1EX30-0XE0 forwards Ethernet frames between the two RJ45 ports and the processor.
Why does mounting orientation matter for 6GK7343-1EX30-0XE0?
The documented upper operating temperature for 6GK7343-1EX30-0XE0 is lower in a vertically mounted rack than in a horizontal rack.

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