The Siemens 6GK1543-1AA01 is a SINEC CP5431 FMS/DP communication processor designed for the SIMATIC S5 PLC platform. It connects legacy S5 controllers—specifically the S5-115U/H, S5-135U, and S5-155U/H—to PROFIBUS networks, enabling data exchange with distributed I/O, drives, and higher-level automation systems.
This module is the FMS/DP variant of the CP5431 series. It is important to distinguish it from the CP5430 TF (6GK1543-0AA02), which is a different card with Technology Function capability. The 6GK1543-1AA01 is the designated replacement for the discontinued CP5430 TF, but the two are not functionally identical—verify your application requirements before substituting.
Item No :
6GK1543-1AA01Order(MOQ) :
1Payment :
EXWProduct Origin :
GermanyShipping Port :
Wuhan, Hubei, ChinaLead Time :
3-5 daysWeight :
0.5kgOverview
6GK1543-1AA01 Siemens Simatic PLC Module
New in stock
Origin from Germany
Payment Method: TT.Western Union
Shipping Method: DHL\UPS\Fedex\EMS\Others
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| Part Number | Description | Key Difference |
|---|---|---|
| 6GK1543-1AA01 | CP5431 FMS/DP (this item) | Discontinued; remaining stock |
| 6GK1543-0AA02 | CP5430 TF (A2) | Technology Function variant; not functionally identical |
| IM308C | DP Slave Interface Module | Required if S5 must function as a DP slave |
| COM5431E | Configuration Software | Required for FMS/DP parameterization |
Critical Compatibility Note: The 6GK1543-1AA01 (CP5431 FMS/DP) and 6GK1543-0AA02 (CP5430 TF) are different cards with different functional capabilities. While supplier data lists the CP5431 as a replacement for the CP5430 TF, verify your application's protocol and function requirements before substituting. The CP5431 is not a DP Slave and cannot replace an IM308C for slave applications .
1 × Siemens 6GK1543-1AA01 SINEC CP5431 FMS/DP Communication Processor
Note: S5 PLC, rack, COM5431E software, and connecting cables are sold separately.
In Stock – Limited remaining stock available
Tested – Each unit verified for functionality (refurbished units)
Warranty Included – 12-month warranty for purchase confidence
Technical Support – S5 compatibility and CP5431 configuration assistance available
Q1: What is the Siemens 6GK1543-1AA01?
It is a SINEC CP5431 FMS/DP communication processor for SIMATIC S5 PLCs. It connects S5-115U/H, S5-135U, and S5-155U/H controllers to PROFIBUS networks for FMS and DP communication .
Q2: Is this product still in production?
No. It was discontinued by Siemens on March 15, 2016 . It is available only through remaining stock, refurbished units, or third-party suppliers.
Q3: What is the difference between CP5431 FMS/DP and CP5430 TF?
The CP5431 (this item) is the FMS/DP variant. The CP5430 TF (6GK1543-0AA02) is the Technology Function variant. They are different cards with different capabilities. While the CP5431 is listed as a replacement for the CP5430 TF, verify functional requirements before substituting .
Q4: Can the CP5431 be used as a PROFIBUS DP Slave?
No. Siemens support forums explicitly confirm that the CP5431 cannot function as a DP slave. It operates as a PROFIBUS master/FDL device. For DP slave applications, an IM308C module is required .
Q5: What software is used to configure the CP5431?
Configuration is performed using the COM5431E software package .
Q6: What is the weight of this module?
Approximately 0.5 kg .
Q7: What is the country of origin?
Germany .
Q8: What should I verify before ordering?
Always verify the exact part number (6GK1543-1AA01), confirm your S5 PLC model is compatible, check whether your application requires DP Slave functionality (which this module does not support), and ensure the condition and warranty of the specific unit offered are acceptable for your maintenance application.
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