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6GK7443-5DX04-0XE0

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The Siemens 6GK7443-5DX04-0XE0 CP 443-5 Extended communication processor connects a SIMATIC S7-400 rack to PROFIBUS DP devices and S7 partners.
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Technical specifications for 6GK7443-5DX04-0XE0

  • Manufacturer:
    Siemens
  • Part Number:
    6GK7443-5DX04-0XE0
  • Product Family:
    Siemens Simatic S7-400
  • Product Type:
    SIMATIC S7-400 CP 443-5 Extended Communication Processor
  • Stock:
    1
  • PROFIBUS Role:
    DPV1 master
  • Transmission Rate:
    9.6 kbit/s to 12 Mbit/s
  • Bus Interface:
    9-pin Sub-D, RS485
  • Maximum DP Slaves:
    125
  • Process Data Capacity:
    4096 input bytes and 4096 output bytes total
  • Data per DP Slave:
    244 input bytes and 244 output bytes
  • S7 Connections:
    48
  • Backplane Supply:
    5 V DC
  • Typical Current Consumption:
    1 A
  • Typical Power Loss:
    5 W
  • Configuration Software:
    STEP 7 V5.4 SP4 or later
  • Weight:
    1.433 lbs (0.65 kg)
  • Estimated shipping dimensions:
    2.5x29x21cm
  • 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 Master Map Bus Timing Communication Services Project Recovery

Features:

  • The CP 443-5 Extended operates as a PROFIBUS DPV1 master.
  • A 9-pin RS485 interface connects the configured PROFIBUS segment.
  • S7, PG/OP and S5-compatible services link the CP to their assigned partners.
The S7-400 backplane carries controller data and module power to the communication processor.

Configured DP slaves contribute cyclic input and output data within the CP process-image limits.

STEP 7 stores the bus address, transfer rate and station configuration used at startup.

The Siemens 6GK7443-5DX04-0XE0 SIMATIC S7-400 CP 443-5 Extended Communication Processor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK7443-5DX04-0XE0 CP 443-5 Extended 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.

Relating slave data to the S7-400 process path

  • Slave inputs: Cyclic input bytes arrive from the configured DP stations.
  • Slave outputs: The controller sends calculated output bytes back through the CP.
  • Per-slave boundary: Each station remains within its documented input and output data limit.
  • Total map: All configured stations share the larger CP process-image capacity.

Keeping transfer rate, segment wiring and termination consistent

  • Baud rate: Every station on the segment uses the configured PROFIBUS transfer rate.
  • RS485 cable: The bus pair and shield terminate at the assigned Sub-D connector.
  • Termination: Only the physical ends of an active segment use powered termination.
  • Station address: Each slave address must agree with the STEP 7 hardware configuration.

Separating cyclic field data from controller and operator connections

  • DPV1 service: The CP manages cyclic and documented acyclic exchanges with DP devices.
  • S7 communication: Configured S7 connections exchange data with supported automation partners.
  • PG/OP access: Engineering and operator communication use their assigned logical resources.
  • S5-compatible path: Documented compatible services remain separate from the DP process image.

Restoring the CP with the saved S7-400 configuration

  • Hardware identity: The complete 5DX04-0XE0 suffix must match the installed processor.
  • STEP 7 project: The saved rack and network configuration restores the intended parameters.
  • Bus verification: Addresses, rate and termination are checked before enabling outputs.
  • Connection test: DP status and S7 connections are confirmed after the CP reaches operation.
Description
In a SIMATIC S7-400 rack, Siemens 6GK7443-5DX04-0XE0 is the CP 443-5 Extended communication processor that provides a PROFIBUS DPV1 master path. The S7-400 CPU exchanges process and service data with the processor through the backplane while the CP manages the fieldbus devices.

At its RS485 interface, 6GK7443-5DX04-0XE0 coordinates configured DP slaves at the selected bus rate and maps their cyclic input and output areas into the S7 communication path. Per-device limits sit inside the larger total process-image capacity, so both values matter when the network is configured.

Beyond cyclic DP data, 6GK7443-5DX04-0XE0 carries S7, PG/OP and S5-compatible communication services for their documented connection partners. Those logical services share the communication processor without turning the PROFIBUS connector into an Ethernet or general-purpose serial port.

The rack backplane supplies 6GK7443-5DX04-0XE0, and STEP 7 stores the selected address, bus parameters and station assignments in the hardware project. A replacement therefore requires the exact order number and the saved network configuration before the DP slaves resume their intended data exchange.
Alternative Names
6GK74435DX040XE0 6GK7 443-5DX04-0XE0 6GK7443 5DX04 0XE0 Siemens 6GK7443-5DX04-0XE0 6GK7-443-5DX04-0XE0 6GK7443-5DX04-0XEO 6GK7443-5DXO4-0XE0 6GK7443 5DX04 0XEO
Technical notes
When commissioning Siemens 6GK7443-5DX04-0XE0, keep the PROFIBUS address, bus profile, termination and STEP 7 hardware configuration aligned with the connected DPV1 network.
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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.
Which settings should be recorded before replacing Siemens 6GK7443-5DX04-0XE0?
Preserve the STEP 7 project, PROFIBUS address, transfer rate, slave list and connection configuration for Siemens 6GK7443-5DX04-0XE0.
Why do all DP slaves drop offline after work on 6GK7443-5DX04-0XE0?
For 6GK7443-5DX04-0XE0, check segment power, cable polarity, end termination and the configured bus rate before changing individual slaves.
How much process data can one slave exchange through 6GK7443-5DX04-0XE0?
A configured DP slave on 6GK7443-5DX04-0XE0 can contribute up to 244 input bytes and 244 output bytes within the CP totals.
Can the Sub-D connector on 6GK7443-5DX04-0XE0 be used as a general serial port?
No. The 6GK7443-5DX04-0XE0 Sub-D interface is the documented RS485 PROFIBUS connection.
What does the S7-400 CPU exchange with 6GK7443-5DX04-0XE0 over the backplane?
The backplane carries process data, parameters, status and communication requests between 6GK7443-5DX04-0XE0 and the S7-400 controller.
Is another CP 443-5 automatically interchangeable with 6GK7443-5DX04-0XE0?
No. Confirm the complete 6GK7443-5DX04-0XE0 order number and a documented migration path because CP 443-5 executions differ.