6GK1543-1AA01
6GK1543-1AA01
6GK1543-1AA01
6GK1543-1AA01
6GK1543-1AA01
6GK1543-1AA01
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6GK1543-1AA01

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Siemens 6GK1543-1AA01 CP 5431 FMS/DP communications processor for exact-model replacement.
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Technical specifications for 6GK1543-1AA01

  • Manufacturer:
    Siemens
  • Part Number:
    6GK1543-1AA01
  • Product Family:
    Siemens Simatic S5
  • Product Type:
    CP 5431 Communications Processor
  • Stock:
    1
  • System context:
    SIMATIC S5-115U / S5-135U / S5-155U
  • Weight:
    0.38 kg
  • Estimated shipping dimensions:
    2.1 x 20.3 x 25.5 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • 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 Selection Installation Service Checks Applications

Features:

  • PROFIBUS FDL role: Siemens uses CP 5431 in an S5 station for FDL communication with free Layer 2 access.
  • SDA data service: the documented communication example uses Send Data with Acknowledge between the S7 and S5 stations.
  • S5-system context: the example places the processor in an S5-135U/155U station with CPU 928.
6GK1543-1AA01 is the CP 5431 used by the passive S5 station in Siemens’ documented S5-to-S7 communication example.

The example uses a PROFIBUS network and an FDL/SDA data exchange, so the installed communication arrangement is the relevant engineering context.

Siemens notes that its sample project uses a specific hardware configuration; a different CPU or communication processor requires the sample program to be changed accordingly.

Apter Power supports documentation review, quotation and procurement for the Siemens 6GK1543-1AA01 CP 5431 Communications Processor.
Siemens 6GK1543-1AA01 CP 5431 FMS/DP Communications Processor Manuals,Datasheets,Link
Important Notice: Review the complete model and installed configuration before using any documentation for service work.
  • Use the complete 6GK1543-1AA01 identity when assessing a replacement.
  • Compare the removed item with the installed system record.
  • Do not treat related hardware as automatically interchangeable.
  • Installation of 6GK1543-1AA01 should be carried out by qualified personnel.
  • Follow the approved site isolation and handling procedure.
  • Confirm the installed connection arrangement before energising.
  • Record the exact 6GK1543-1AA01 identity before service work.
  • Inspect the removed unit and its connection context for relevant differences.
  • Follow the host-equipment service procedure for functional checks.
  • 6GK1543-1AA01 is supplied for maintenance and exact-model sourcing support.
  • Use it only after the installed equipment context has been reviewed.
  • Apter Power can assist with documentation and quotation enquiries.
Description
6GK1543-1AA01 is the Siemens CP 5431 FMS/DP communications processor for SIMATIC S5 environments. Its complete order number identifies the processor configuration used when reviewing a legacy control-system communication requirement.

For an installed network cabinet, 6GK1543-1AA01 should be assessed against the existing S5 station, communication protocol and connection arrangement rather than against a shortened CP family description. This protects a retrofit or repair request from being based only on similar-looking hardware.

Procurement of 6GK1543-1AA01 is most useful when the original station records and communication task are kept together. Those records allow the service request to focus on the intended processor role within the existing automation system.
Alternative Names
6GK 1543-1AA01 6GK15431AA01 6GK1 543-1AA01 CP 5431 FMS/DP CP5431 FMS/DP 6GK1543-1AAO1
Technical notes
6GK1543-1AA01 is a CP 5431 FMS/DP processor for a SIMATIC S5 communication context, not a generic Ethernet accessory. Its protocol and station role determine whether it can be considered for the installed cabinet. Stop a substitution review unless the existing S5 hardware, network function and connector arrangement are identified together.
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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.
In a WinCC single-user system, when is 6GK1543-1AA01 relevant to a PROFIBUS FMS communication outage?
It is relevant when the affected controller is a SIMATIC S5-115U, S5-135U or S5-155U station using the CP 5431 FMS/DP. Confirm that station role before treating the CP as the failed communication point.
What site information should a technician collect before replacing 6GK1543-1AA01?
Collect the S5 CPU family, the complete CP label, the PROFIBUS FMS network route and the connected WinCC or SIMATIC NET interface details. This separates a module issue from a PC-side or bus-side configuration issue.
Can 6GK1543-1AA01 be selected for an S7 station that also uses PROFIBUS?
No replacement decision should be made from the bus name alone. Siemens lists separate CP families for S5, S7-300 and S7-400 in the same FMS system view, so the installed controller family remains the first boundary.
What is the practical consequence of confusing 6GK1543-1AA01 with another CP 5431 reference?
The repair request can be directed to the wrong communication configuration. Keep the complete order number with the S5 station details instead of using only a shortened CP description.
Why should the existing COM 5431 FMS/DP software record be retained with 6GK1543-1AA01?
Siemens associates COM 5431 FMS/DP with the CP 5431 FMS/DP context. Retaining the installed software record gives the engineer a starting point for restoring the existing communication configuration after hardware work.
When should procurement stop a 6GK1543-1AA01 request?
Stop when the request cannot confirm the S5-115U, S5-135U or S5-155U station, the PROFIBUS FMS task and the complete module label. Without those details, the request does not establish the required communication role.

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