SIEMENS 6GK1543-1AA00 Industrial Ethernet Communications Processor – SIMATIC NET CP 543-1
When a SIMATIC S7-400 PLC loses its Ethernet communications processor, the consequences ripple instantly across the entire production floor. PROFINET I/O devices go silent, HMI panels lose their data feeds, and SCADA systems are left blind — forcing an unplanned shutdown that can cost thousands of dollars per hour. The SIEMENS 6GK1543-1AA00 is the communications backbone that keeps this from happening, providing reliable, high-speed Industrial Ethernet connectivity that modern automation systems depend on.
The 6GK1543-1AA00 is the CP 543-1 Communications Processor within Siemens’ SIMATIC NET product family — one of the most widely deployed Industrial Ethernet interface modules for the S7-400 platform globally. Engineered for demanding industrial environments, it supports standard TCP/IP, ISO-on-TCP, and UDP communication protocols, making it a universal integration point between S7-400 controllers and plant-wide Ethernet networks. Its proven reliability has made it a staple in automotive, chemical, energy, and discrete manufacturing facilities across more than 100 countries.
Technical Specifications
- Part Number / SKU: 6GK1543-1AA00
- Product Family: SIMATIC NET CP 543-1
- Compatible PLC Platform: SIMATIC S7-400
- Network Interface: Industrial Ethernet (IEEE 802.3)
- Communication Protocols: TCP/IP, ISO-on-TCP, UDP, S7 Communication, FETCH/WRITE
- Transmission Rate: 10/100 Mbit/s (auto-sensing)
- Connector Type: RJ45
- Configuration: Via STEP 7 / TIA Portal (NCM S7)
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: -40 °C to +70 °C
- Degree of Protection: IP20
- Power Supply: Via S7-400 backplane bus
- Weight: Approx. 300 g
- Certifications: CE, UL, cUL, FM
Key Features & Benefits
- Seamless S7-400 Integration: Plugs directly into the S7-400 backplane — no external power supply or mounting hardware required.
- Multi-Protocol Support: Handles TCP/IP, ISO-on-TCP, UDP, and native S7 communication simultaneously, reducing the need for protocol converters.
- FETCH/WRITE Access: Enables direct data exchange with third-party systems (e.g., SCADA, MES, historians) without custom programming.
- Auto-Sensing 10/100 Mbit/s: Automatically negotiates the optimal network speed, ensuring compatibility with both legacy and modern Ethernet infrastructure.
- Robust Industrial Design: Built to withstand vibration, EMI, and wide temperature ranges typical of factory floor environments.
- Diagnostic Transparency: Integrated diagnostics accessible via STEP 7 / TIA Portal for rapid fault identification and reduced MTTR.
- Proven Global Deployment: Installed in tens of thousands of facilities worldwide — a trusted choice for system integrators and OEMs.
Industry & Equipment Applications
- Automotive Manufacturing: Body shop welding lines, paint shop conveyors, and final assembly PLC networks.
- Chemical & Petrochemical: DCS-to-PLC Ethernet bridging in process control islands.
- Power Generation & Utilities: Substation automation and energy management system integration.
- Food & Beverage: Packaging line controllers requiring hygienic-zone network segmentation.
- Pharmaceutical: Batch control systems with FDA 21 CFR Part 11 audit trail requirements.
- Water & Wastewater: Remote SCADA polling of distributed S7-400 stations.
- Discrete Manufacturing: Machine tool networks, press lines, and robotic cell integration.
System Integration & Compatible Parts
The 6GK1543-1AA00 is designed to operate within the broader SIMATIC S7-400 and SIMATIC NET ecosystem. Commonly paired components include:
- SIMATIC S7-400 Racks: UR1 (6ES7400-1JA01-0AA0), UR2 (6ES7400-2JA00-0AA0)
- S7-400 Power Supplies: PS 407 series (e.g., 6ES7407-0DA02-0AA0)
- S7-400 CPUs: CPU 414, CPU 416, CPU 417 series
- SIMATIC NET Industrial Ethernet Switches: SCALANCE X series (e.g., 6GK5208-0BA10-2AA3)
- PROFINET IO Controllers: For mixed PROFINET/Ethernet network architectures
- Programming Software: SIMATIC STEP 7 V5.x or TIA Portal V13 and above
Our Quality Assurance Process
At Konmask.com, every SIEMENS 6GK1543-1AA00 unit undergoes a rigorous multi-stage verification process before shipment:
- Authenticity Verification: Physical inspection of labels, firmware version stamps, and holographic markings against Siemens OEM specifications.
- Functional Pre-Check: Where applicable, modules are powered and communication ports are tested for signal integrity.
- Condition Grading: Units are clearly graded as New, Refurbished, or Surplus — no ambiguity.
- ESD-Safe Packaging: All modules are packed in anti-static bags with foam cushioning to prevent transit damage.
- Traceability: Each order is documented with batch records for full supply chain transparency.
How to Order
- Submit an inquiry via the “Get a Quote” button or email [email protected].
- Provide your required quantity, preferred condition (new / refurbished / surplus), and delivery timeline.
- Receive a formal quotation within 24 business hours.
- Confirm the order — we accept T/T bank transfer, PayPal, and major credit cards.
- Shipment via DHL, FedEx, or UPS with full tracking and export documentation.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation: We focus exclusively on PLC, DCS, HMI, and industrial network components — not a generalist marketplace.
- ✅ Global Sourcing Network: Access to genuine Siemens parts from authorized channels and verified surplus inventories worldwide.
- ✅ Fast Quotation: Most inquiries receive a response within 24 hours, with expedited options available.
- ✅ Export Expertise: Experienced in international shipping, customs documentation, and compliance for 50+ countries.
- ✅ Technical Support: Our engineers can advise on compatibility, firmware, and system integration questions.
- ✅ Flexible MOQ: Single-unit orders welcome — no minimum order quantity for most parts.
Frequently Asked Questions
Q: Is the SIEMENS 6GK1543-1AA00 compatible with TIA Portal?
A: Yes. The CP 543-1 can be configured using both SIMATIC STEP 7 V5.x (via NCM S7) and TIA Portal V13 and later versions, depending on the firmware revision of the module.
Q: What is the difference between 6GK1543-1AA00 and 6GK1543-1AA01?
A: The -1AA01 is a later hardware revision with minor firmware enhancements. Both are functionally compatible with the S7-400 platform, but we recommend confirming the revision with your system integrator for critical applications.
Q: Can this module support PROFINET IO?
A: The 6GK1543-1AA00 (CP 543-1) supports standard Industrial Ethernet protocols including S7 communication and TCP/IP. For dedicated PROFINET IO controller functionality, the CP 443-1 Advanced or CP 443-1 EX20 may be more appropriate.
Q: Do you provide a warranty?
A: Yes. All units come with a minimum 90-day warranty against defects. Extended warranty options are available upon request.
Q: How long does international shipping take?
A: Standard DHL/FedEx express delivery typically takes 3–7 business days to most destinations. Expedited options are available for urgent requirements.
Q: Can you provide export documentation and certificates of origin?
A: Yes. We provide full commercial invoices, packing lists, certificates of origin, and other customs documentation as required by the destination country.
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