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6GK7343-5FA01-0XE0

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Siemens 6GK7343-5FA01-0XE0 is a SIMATIC S7-300 CP 343-5 communication processor that connects the controller to PROFIBUS for FMS, S5-compatible, PG/OP, and S7 communication.
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Technical specifications for 6GK7343-5FA01-0XE0

  • Manufacturer:
    Siemens
  • Part Number:
    6GK7343-5FA01-0XE0
  • Product Family:
    Siemens Simatic S7-300
  • Product Type:
    CP 343-5 PROFIBUS Communication Processor
  • Stock:
    1
  • PROFIBUS Interface:
    1 x 9-pin Sub-D socket, RS485
  • Transmission Rate:
    9.6 kbit/s to 12 Mbit/s
  • Communication Services:
    FMS, S5-compatible, PG/OP, and S7 communication
  • Power Connection:
    4-pole terminal block
  • Backplane Supply:
    5 V DC
  • External Supply:
    24 V DC
  • Typical Backplane Current:
    0.15 A at 5 V DC
  • Typical External Current:
    0.25 A at 24 V DC
  • Power Loss:
    5 W
  • Operating Temperature:
    0 to 60 °C
  • Storage and Transport Temperature:
    -40 to 70 °C
  • Maximum Relative Humidity:
    95%, non-condensing
  • Protection Rating:
    IP20
  • Maximum Units per CPU:
    4
  • Maximum Open-Communication Connections:
    16
  • Maximum FMS Connections:
    16
  • Maximum S7 Connections:
    16
  • Maximum Active Multiprotocol Connections:
    48
  • Weight:
    0.73 lbs (0.331 kg)
  • Estimated shipping dimensions:
    12.9x3.5x14.2cm
  • 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 DP Link Services Power Diagnostics

Features:

  • One 9-pin RS485 interface connects the S7-300 station to PROFIBUS.
  • Selectable rates from 9.6 kbit/s to 12 Mbit/s support different segment designs.
  • FMS, S5-compatible, PG/OP, and S7 services share the processor.
Siemens 6GK7343-5FA01-0XE0 assigns PROFIBUS communication to a dedicated CP 343-5 module in the S7-300 rack.

The 6GK7343-5FA01-0XE0 bus rate must be matched to cable length, connector wiring, shielding, and end termination.

Status LEDs and the mode switch on 6GK7343-5FA01-0XE0 provide the first checks when a configured connection does not enter data exchange.

The Siemens 6GK7343-5FA01-0XE0 CP 343-5 PROFIBUS Communication Processor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK7343-5FA01-0XE0 CP 343-5 PROFIBUS 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.

PROFIBUS Segment Checks

  • Connector: The 9-pin Sub-D socket is the physical connection point for the PROFIBUS cable.
  • Electrical layer: RS485 carries the differential bus signal between 6GK7343-5FA01-0XE0 and the connected stations.
  • Rate selection: The configured rate spans 9.6 kbit/s to 12 Mbit/s and must match every station on the segment.
  • Segment integrity: Cable reach, shield bonding, and end termination must be planned for the selected transmission rate.

Communication Resource Use

  • FMS: Configured FMS connections exchange structured variables with partners using the same service.
  • S5-compatible: SEND/RECEIVE services provide open data paths to configured communication partners.
  • PG/OP: Engineering and operator devices use the processor for programming and visualization traffic.
  • S7 communication: S7 connections share the CP resources with FMS, S5-compatible, and PG/OP services.

Module Supply Paths

  • Backplane supply: The S7-300 rack supplies 5 V DC to the module electronics through the backplane connector.
  • External feed: A separate 24 V DC source enters through the four-pole terminal block.
  • Combined dependency: 6GK7343-5FA01-0XE0 requires correct rack seating and the external feed before communication can operate.
  • Thermal load: The documented 5 W loss becomes cabinet heat and must be included in enclosure planning.

Front-Panel Diagnosis

  • Mode switch: The selected operating mode determines whether the communication processor can start data exchange.
  • Module state: The front indicators show whether 6GK7343-5FA01-0XE0 is running or reporting a processor condition.
  • Bus state: Bus-related indication separates a PROFIBUS communication problem from a rack-power problem.
  • Fault isolation: After checking the module state, verify station addresses, cable continuity, shielding, and end termination.
Description
Siemens 6GK7343-5FA01-0XE0 is a CP 343-5 communication processor for the SIMATIC S7-300 system. It gives the controller a dedicated PROFIBUS path for FMS, S5-compatible, PG/OP, and S7 communication while leaving the CPU to execute the automation program.

At the front of 6GK7343-5FA01-0XE0, the 9-pin Sub-D socket carries the RS485 PROFIBUS segment. The configured transmission rate can be selected from 9.6 kbit/s to 12 Mbit/s, so the permitted segment length, connector termination, and shield continuity must be planned together.

Power for 6GK7343-5FA01-0XE0 comes from both the S7-300 backplane and an external 24 V DC connection. The single-width module therefore depends on correct rack seating as well as the front power wiring before it can exchange data with bus partners.

During commissioning, 6GK7343-5FA01-0XE0 exposes its operating mode and fault state through the front indicators and mode switch. These indications help separate a processor-state issue from a cabling, address, or termination problem on the PROFIBUS segment.
Alternative Names
6GK73435FA010XE0 6GK7343 5FA01 0XE0 Siemens 6GK7343-5FA01-0XE0 SIMATIC CP 343-5 CP343-5 PROFIBUS processor 6GK7343-5FA01-0XE0 PROFIBUS CP S7-300 CP343-5 communications module Siemens CP 343-5 6GK7 343-5FA01-0XE0
Technical notes
Through one 9-pin RS485 interface, Siemens 6GK7343-5FA01-0XE0 supports PROFIBUS rates from 9.6 kbit/s to 12 Mbit/s.
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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 6GK7343-5FA01-0XE0 lose communication after the PROFIBUS rate is increased?
Siemens 6GK7343-5FA01-0XE0 supports 12 Mbit/s, but higher rates reduce permitted segment length and require compliant cabling, shielding, connectors, and termination.
Which supply should be checked when 6GK7343-5FA01-0XE0 has no front indicators?
The 6GK7343-5FA01-0XE0 uses both the 5 V S7-300 backplane supply and an external 24 V DC feed, so both paths require verification.
Can 6GK7343-5FA01-0XE0 handle FMS and S7 communication at the same time?
Yes, 6GK7343-5FA01-0XE0 supports multiprotocol operation, but configured connections must remain within the processor's documented service and connection limits.
What should be checked when one PROFIBUS station is unreachable through 6GK7343-5FA01-0XE0?
For 6GK7343-5FA01-0XE0, compare the station address and configured rate, then inspect connector seating, cable continuity, shielding, and end-of-segment termination.
How does the single-width format of 6GK7343-5FA01-0XE0 affect installation?
The 6GK7343-5FA01-0XE0 occupies one S7-300 module width, but it still needs correct backplane engagement, front power wiring, and clearance for the PROFIBUS connector.