Genuine SIEMENS 6ES5948-3UR23 Central Processing Unit | SIMATIC S5 – Verified Source
The SIEMENS 6ES5948-3UR23 is the high-performance Central Processing Unit of the SIMATIC S5-948 series — a cornerstone controller deployed across critical manufacturing, energy, and process automation infrastructure worldwide. As Siemens has progressively phased out the S5 product line, genuine replacement CPUs have become increasingly scarce, making the market highly susceptible to counterfeit modules, refurbished-as-new units, and grey-market components that carry no warranty and pose serious operational risk to your plant.
At Konmask, every 6ES5948-3UR23 unit we supply is sourced exclusively through verified industrial channels and subjected to our multi-step authenticity protocol before dispatch. We do not list products we cannot authenticate. Our commitment to genuine, verified, and authentic components is the foundation of every transaction — protecting your equipment, your uptime, and your procurement reputation.
Technical Specifications
- Manufacturer: Siemens AG
- Part Number: 6ES5948-3UR23
- Product Family: SIMATIC S5 / S5-948
- Module Type: Central Processing Unit (CPU)
- Memory: Integrated RAM + EPROM/EEPROM program memory
- Communication Interface: SINEC H1 / Industrial Ethernet compatible
- Multiprocessor Capability: Up to 4 CPUs in multiprocessor mode
- I/O Addressing: Up to 512 digital inputs / 512 digital outputs
- Analog I/O: Up to 256 analog channels
- Cycle Time: Approx. 0.3 ms per 1000 binary instructions
- Operating Voltage: 5 V DC (via S5 backplane bus)
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: -40 °C to +70 °C
- Dimensions (W×H×D): Standard S5 double-width module format
- Weight: Approx. 360 g
- Certifications: CE, UL, cUL (original manufacture)
- Specifications verified against Siemens official documentation and SIMATIC S5-948 system manual.
Our 4-Step Quality Verification Process
- Step 1 — Visual & Labeling Inspection: Each unit is examined under magnification for authentic Siemens holographic labels, correct part number silk-screening, PCB revision markings, and absence of re-labeling or sanding marks. Counterfeit units frequently fail at this stage.
- Step 2 — Functional Power-On Test: The CPU is bench-tested in a compatible S5 rack. We verify successful boot sequence, LED status indicators (RUN/STOP/ERROR), and communication bus response. Test results are logged and available as a Test Report upon request.
- Step 3 — Firmware & Hardware Revision Check: We cross-reference the hardware revision code against Siemens’ known authentic revision matrix to confirm the unit has not been downgraded or re-flashed with non-OEM firmware.
- Step 4 — Documentation Package Preparation: Every shipment is accompanied by a Packing List, Certificate of Conformity (COC), Country of Origin (COO) Declaration, and photographic evidence of the specific unit shipped. Test Reports are available on request prior to order confirmation.
Key Features & Benefits
- High-Speed Processing: ~0.3 ms/1000 binary instructions cycle time enables real-time control of complex, multi-axis industrial processes.
- Multiprocessor Architecture: Supports up to 4 CPUs in parallel per rack, compliant with IEC 61131-3 multiprocessor coordination standards — ideal for high-availability redundancy configurations.
- SINEC H1 Network Integration: Native Industrial Ethernet connectivity allows seamless integration into existing SCADA and DCS architectures without additional communication processors.
- Broad I/O Scalability: Addresses up to 512 DI/DO and 256 analog channels, meeting the demands of large-scale process plants per IEC 61511 functional safety guidelines.
- Proven Long-Term Reliability: The S5-948 platform has demonstrated 20+ years of field reliability in continuous-process environments including petrochemical, power generation, and automotive manufacturing.
- Drop-In Replacement Compatibility: Direct hardware-compatible replacement for existing S5-948 installations — no rack modification or rewiring required, minimizing maintenance downtime.
Typical Applications
- Oil & Gas: Pipeline SCADA systems, compressor station control, and wellhead automation requiring high-cycle-rate CPUs with proven field reliability.
- Power Generation: Turbine governor control and boiler management systems in coal, gas, and hydroelectric plants running legacy S5 architectures.
- Automotive Manufacturing: Body-in-white welding lines and paint shop conveyor control where multiprocessor S5 racks manage synchronized multi-axis motion.
- Chemical & Petrochemical: Batch reactor sequencing and distillation column control in SIL-rated environments requiring certified, traceable hardware.
- Water & Wastewater Treatment: Pump station automation and SCADA-integrated treatment plant control using existing S5 infrastructure.
- Steel & Metals: Rolling mill drive coordination and furnace temperature control systems with high I/O density requirements.
Compatible System Components
- SIMATIC S5-948R Rack (6ES5948-3UA11 / 3UA21 series)
- SIMATIC S5 Power Supply Units (6ES5955-3LC41, 6ES5955-3LF41)
- S5 Digital Input/Output Modules (6ES5420 / 6ES5430 / 6ES5440 / 6ES5450 series)
- S5 Analog Input/Output Modules (6ES5460 / 6ES5470 / 6ES5480 series)
- SINEC H1 Communication Processor (6GK1143-0TA01)
- SIMATIC S5 Programming Cable & STEP 5 Software (6ES5734-1BD20)
- S5 Memory Submodules (6ES5374 EPROM/EEPROM series)
Global Sourcing & Shipping Capabilities
- Primary Service Regions: Mainland China, Hong Kong SAR, Southeast Asia (Vietnam, Thailand, Indonesia, Malaysia), Middle East (UAE, Saudi Arabia), Europe (Germany, Poland, Netherlands), and North America (USA, Canada).
- Export Packaging Standard: Anti-static ESD bag → foam-lined inner box → double-wall corrugated outer carton. Fragile/shock indicators applied to all CPU shipments.
- Logistics Options: DHL Express (2–5 days), FedEx International Priority, sea freight LCL/FCL for bulk orders, and China Post registered airmail for budget-sensitive destinations.
- Lead Time: In-stock units ship within 1–3 business days of payment confirmation. Pre-order units: 7–15 business days subject to sourcing verification.
- Export Compliance: All shipments include commercial invoice, packing list, and COO declaration. HS Code: 8537.10 (programmable logic controllers). Export licensing assessed per destination country.
Certifications & Compliance Statement
- CE Marking: Compliant with EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU (original manufacture).
- UL / cUL Listed: Recognized under UL 508 (Industrial Control Equipment) at original manufacture.
- RoHS: Original Siemens production units comply with RoHS Directive 2011/65/EU.
- ISO 9001 Supply Chain: Konmask operates under ISO 9001-aligned procurement and quality management procedures for all industrial automation components.
Konmask Quality Commitment: We supply only genuine, traceable components. Every unit is individually documented, tested, and photographed before shipment. If any unit fails to match its stated specifications upon receipt, we provide full replacement or refund — no questions asked. Our reputation is built on verified authenticity, not volume.
How to Order
- Step 1 — Confirm Your Requirement: Add to cart directly, or contact us at support@konmask.com with your part number, required quantity, and destination country. We respond within 24 hours on business days.
- Step 2 — Review & Approve Documentation: We provide a proforma invoice, unit photographs, and COC/Test Report (on request) before payment. You approve before we ship.
- Step 3 — Payment & Dispatch: Accepted methods: T/T bank transfer, PayPal, and major credit cards. Dispatch within 1–3 business days of cleared payment. Tracking number provided same day as shipment.
Sample Policy: Single-unit samples available for qualified buyers. Test reports can be provided prior to bulk order commitment. Contact us to discuss your evaluation requirements.
Authenticity & Trust FAQ
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Q: How can I verify the unit I receive is a genuine Siemens product?
A: Every unit ships with photographic documentation of the specific item, including label close-ups and PCB markings. You can cross-reference the hardware revision and date codes against Siemens’ published revision history. We also provide a Certificate of Conformity stating the unit’s origin and our verification findings. If you have any doubt upon receipt, contact us immediately — we will assist with verification or arrange return. -
Q: What is your warranty policy for this CPU?
A: We provide a 12-month warranty against defects in materials and workmanship from the date of shipment. This covers functional failure under normal operating conditions. Warranty does not cover damage from incorrect installation, overvoltage, or physical mishandling. Replacement units are dispatched within 5 business days of confirmed warranty claim. -
Q: Can you provide a test report or inspection photos before I place a bulk order?
A: Yes. For orders of 2 units or more, we can provide pre-shipment inspection photos and a functional test report at no additional charge. For single-unit orders, documentation is provided upon request. Contact support@konmask.com with your order details to arrange pre-order documentation review.
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