Siemens 6ES5928-3UA12 | Central Processing Unit for S5-135U PLC

Product Description

The Siemens 6ES5928-3UA12 is a SIMATIC S5 CPU 928B central processing unit, specifically designed for the S5‑135U programmable logic controller system. It provides high-performance processing, robust communication, and ample memory, enabling reliable execution of complex automation programs.

Moreover, this CPU manages logic execution, input/output processes, diagnostics, and communication functions within the PLC system. Although the S5 series is now a legacy platform, the 6ES5928-3UA12 remains available as a spare part, ensuring long-term operational support for existing industrial installations.

Its compact dimensions and standardized mounting allow seamless integration with other S5 modules, forming complete automation solutions suitable for manufacturing, process control, and energy systems.

Technical Specifications

• Product Type: Central Processing Unit (CPU)

• Model Number: 6ES5928-3UA12

• Manufacturer: Siemens

• Series: SIMATIC S5

• CPU Type: CPU 928B

• System Compatibility: SIMATIC S5‑135U PLC system

• User Memory (RAM): 256 KB (expandable depending on configuration)

• Cycle Time: 0.1–0.3 ms per 1,000 instructions

• Functions: Executes control programs, manages I/O processes, diagnostics, communication

• Interfaces: Compatible with S5 bus modules and communication processors

• Application Scope: High-performance automation tasks in industrial environments

• Dimensions (H × W × D): 213 × 266 × 33 mm

• Weight: 0.45 kg

• Lifecycle: Spare part (legacy product, supported for existing S5 systems)

FAQ

Q: What is the main function of the Siemens 6ES5928-3UA12?
A: It provides central processing for SIMATIC S5‑135U PLC systems, managing logic and I/O operations.

Q: Is this CPU compatible with other S5 modules?
A: Yes, it works seamlessly with digital/analog I/O and communication processors.

Q: What is the memory capacity of this CPU?
A: The CPU has 256 KB user memory, expandable depending on the configuration.

Q: Is the 6ES5928-3UA12 still available for purchase?
A: Yes, it is available as a spare part for legacy S5 installations.

Q: What industries use this CPU?
A: Manufacturing, process automation, energy systems, and other industrial environments.