SIEMENS 6ES5 942-7UA13 Central Processing Unit – SIMATIC S5 Series
When a SIMATIC S5 PLC system loses its central processing unit, the entire production line comes to a halt. Conveyor belts stop, robotic arms freeze, and automated assembly sequences fail — costing manufacturers thousands of dollars per hour in unplanned downtime. The SIEMENS 6ES5 942-7UA13 CPU module is the irreplaceable brain of the S5 rack system, and without a reliable replacement source, restoring operations can take days or even weeks.
The 6ES5 942-7UA13 is a high-performance central processing unit within the SIMATIC S5 family — Siemens’ legendary programmable logic controller platform that has powered industrial automation worldwide for decades. This CPU variant occupies a critical position in the S5 135U/155U rack systems, offering robust processing capability for complex sequential and process control applications. Despite the S5 series being a mature platform, it remains deeply embedded in automotive, chemical, power generation, and heavy manufacturing facilities globally, making reliable spare parts sourcing an ongoing operational necessity.
Technical Specifications
- Part Number / SKU: 6ES5 942-7UA13
- Brand: SIEMENS
- Series: SIMATIC S5
- Module Type: Central Processing Unit (CPU)
- Compatible Rack: SIMATIC S5-135U / S5-155U
- Programming Language: STEP 5 (STL, LAD, FBD)
- Communication Interface: SINEC H1 / L2 compatible
- Memory: Supports RAM and EPROM memory submodules
- Operating Temperature: 0°C to +60°C
- Storage Temperature: -40°C to +70°C
- Degree of Protection: IP20
- Power Supply: Via S5 backplane bus
- Weight: Approx. 2,120 g
Note: Specifications are based on published Siemens documentation. Always verify against your system’s engineering drawings before installation.
Key Features & Benefits
- Drop-in Replacement: Direct hardware-compatible substitute for existing S5-135U/155U installations — no rack modification required.
- Proven Reliability: SIMATIC S5 CPUs are renowned for decades of continuous operation in harsh industrial environments.
- STEP 5 Compatible: Fully supports existing STEP 5 programs — no software migration or rewriting needed.
- Multi-tasking Processing: Handles complex cyclic, interrupt-driven, and time-controlled program execution.
- Expandable Memory: Supports plug-in RAM and EPROM submodules for program and data storage flexibility.
- Industrial-Grade Construction: Designed for 24/7 operation in electrically noisy, high-vibration industrial environments.
- Long Service Life: Siemens S5 hardware is built to last — many units remain in service after 20+ years of operation.
Industry & Equipment Applications
- Automotive Manufacturing: Body welding lines, paint shop conveyors, engine assembly automation
- Chemical & Petrochemical: Reactor control, batch processing, pipeline monitoring systems
- Power Generation: Turbine control, substation automation, load management systems
- Steel & Metal Processing: Rolling mill control, furnace automation, crane management
- Water & Wastewater Treatment: Pump station control, filtration process automation
- Food & Beverage: Filling line control, pasteurization process management
- Pharmaceutical: Clean room environmental control, batch manufacturing systems
System Integration & Compatible Parts
The 6ES5 942-7UA13 is designed to operate within the SIMATIC S5 modular rack ecosystem. Compatible and frequently paired components include:
- Rack: 6ES5 700-series (S5-135U / S5-155U central racks)
- Power Supply: 6ES5 955-series PS modules
- Digital I/O: 6ES5 400/420/430/431/436/437-series modules
- Analog I/O: 6ES5 460/464/470/471-series modules
- Communication: 6ES5 521/524-series CP modules (SINEC L2/H1)
- Memory Submodules: 6ES5 374/375-series RAM/EPROM cards
- Programming Device: Compatible with PG 720/740/760 and STEP 5 software on PC
Our Quality Assurance Process
At Konmask.com, every SIEMENS 6ES5 942-7UA13 unit undergoes a rigorous multi-stage inspection before shipment:
- Visual Inspection: Check for physical damage, corrosion, bent pins, and component integrity
- Functional Testing: Power-on verification and communication bus diagnostics where applicable
- Authenticity Verification: Cross-reference of part markings, date codes, and manufacturer labels
- Anti-Static Packaging: All modules shipped in ESD-safe bags with foam cushioning
- Documentation: Inspection report available upon request
How to Order
- Submit an inquiry via our Request a Quote form on this page
- Provide your required quantity, delivery timeline, and destination country
- Our technical team will confirm availability, lead time, and pricing within 24 business hours
- Upon agreement, we issue a proforma invoice and arrange secure payment
- Units are carefully packed and shipped via DHL / FedEx / UPS with full tracking
For urgent requirements, contact us directly at support@konmask.com or call +0086 19859288691.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation Spare Parts — PLC, DCS, HMI, drives, and more
- ✅ Global Sourcing Network — Access to new, surplus, and refurbished inventory worldwide
- ✅ Technical Expertise — Our team includes experienced automation engineers who understand your application
- ✅ Fast Response — Inquiries answered within 24 hours; emergency support available
- ✅ Secure Shipping — ESD-safe packaging, full insurance, and real-time tracking on every order
- ✅ Trusted by Industry — Serving clients in manufacturing, energy, and process industries across 30+ countries
Frequently Asked Questions
Q: Is the SIEMENS 6ES5 942-7UA13 still available new from Siemens?
A: The SIMATIC S5 series has been discontinued by Siemens. However, Konmask.com maintains access to surplus new-in-box, tested used, and refurbished units to support ongoing maintenance needs.
Q: Can this CPU replace other 6ES5 942-series variants?
A: The 6ES5 942-7UA13 is a specific hardware revision. While it shares the same form factor with other 942-series CPUs, firmware and feature differences may exist. Always confirm compatibility with your system documentation before substitution.
Q: What programming software is required for this CPU?
A: This module is programmed using Siemens STEP 5 software (S5 for Windows). A compatible programming device (PG) or PC with a suitable interface adapter is required.
Q: Do you provide a warranty?
A: Yes. All units sold by Konmask.com come with a standard 90-day functional warranty. Extended warranty options are available — please inquire when requesting a quote.
Q: How long does shipping take?
A: Standard international shipping via DHL/FedEx typically takes 3–7 business days depending on destination. Express options are available for urgent requirements.
Q: Can you help with installation or commissioning?
A: While we do not provide on-site services, our technical team can offer remote guidance and documentation support to assist your maintenance engineers.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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