Siemens 6ES5928-3UA12 Central Processing Unit

Product Description

The Siemens SIMATIC S5 CPU 928 (6ES5928-3UA12) is a high-performance central processing module designed for S5-135U and S5-155U PLC systems. It delivers substantial memory and advanced I/O handling capabilities, making it suitable for complex automation tasks in industrial environments. Despite being a legacy component, it remains critical for maintaining and servicing existing S5 installations.

Technical Specifications

Key Features

• High-capacity CPU for demanding automation applications

• Large memory for complex logic and data management

• Extensive timers and counters for versatile control strategies

• Scalable I/O support up to 2048 digital channels

• Fully compatible with Siemens S5-135U and S5-155U PLC modules

Applications

• Large-scale manufacturing process control

• Complex sequencing and event-driven operations

• Maintenance of legacy Siemens S5 PLC systems

• Automation systems requiring stable and proven S5 CPU modules

Considerations

• Discontinued product; replacement parts are limited to secondary markets

• Siemens recommends migration to SIMATIC S7 or newer PLC platforms for long-term support

• Spare units available primarily through specialized resellers or refurbished suppliers

FAQ

Q: Is this CPU compatible with newer Siemens PLC systems?
A: No, the CPU is specifically for S5-135U and S5-155U systems. For newer platforms, consider SIMATIC S7 or later.

Q: How much memory does it support?
A: It features 192 KB of user RAM for programs and data blocks.

Q: Can it handle large-scale I/O?
A: Yes, it supports up to 2048 digital input/output channels for extensive automation setups.

Q: Where can replacement units be sourced?
A: Only through specialized resellers or refurbished legacy equipment suppliers.