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Product Overview
The Siemens 6ES5945-7UA21 central processing unit delivers reliable control performance for SIMATIC S5-135U programmable controllers. This CPU module executes complex logic and manages extensive I/O configurations. It supports multi-tasking operations for demanding automation applications. The processor fits directly into standard S5-135U rack systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 6ES5945-7UA21 |
| Product Type | Central Processing Unit (CPU) |
| Brand | Siemens |
| Category | PLC CPUs |
| Compatibility | SIMATIC S5-135U |
| Memory Capacity | 48 KB (RAM) |
| Memory Type | RAM |
| Programming Language | STEP 5 |
| Processing Speed | 1 ms per 1,000 operations |
| Integrated Communication | Built-in ports |
| Weight | Approximately 0.45 kg |
| Dimensions | 233 mm x 25 mm x 158 mm (H x W x D) |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 70°C |
| Protection Class | IP20 |
Key Features and Benefits
High-Speed Program Execution
The 6ES5945-7UA21 processes user programs rapidly for real-time control. It executes 1,000 operations in approximately 1 millisecond. This speed ensures precise timing and smooth machine operation.
Generous Memory Capacity
This processor offers 48 KB of RAM for extensive control programs. It accommodates complex logic and large data blocks. Users can implement sophisticated automation strategies with ease.
Built-In Communication Capability
The CPU features integrated communication ports for direct connectivity. These interfaces support programming devices and HMI panels. Operators gain comprehensive access to system data.
Robust Industrial Design
This central processing unit operates reliably from 0°C to 60°C. Its rugged construction withstands industrial environments. This durability translates into long-term dependable performance.
Application and Use Cases
The Siemens 6ES5945-7UA21 serves process control, material handling, and manufacturing systems. It also handles multi-axis coordination and complex sequencing tasks. Maintenance teams will find this CPU an ideal replacement for existing S5-135U controllers.