The 6ES5900-0AA12 is a central processing unit from the Siemens SIMATIC S5 family, built to handle demanding control tasks in industrial automation. This module delivers reliable processing power for legacy S5 systems. Consequently, many plants still rely on it for continuous production.
Technical Specifications at a Glance
The table below highlights the main technical parameters of the 6ES5900-0AA12. Each value comes from the manufacturer’s official data sheet.
| Parameter | Specification |
|---|---|
| Product type | CPU module |
| Compatibility | SIMATIC S5 PLC systems |
| Processor | 16-bit microprocessor |
| Memory capacity | 32 KB RAM |
| Dimensions (W x H x D) | Approx. 185 x 130 x 30 mm |
| Weight | Approx. 0.35 kg |
| Interface | Backplane bus, serial port |
| Power supply | 5 V DC via backplane |
| Energy storage | Buffer battery for RAM retention |
| Part count | Single PCB with heatsink assembly |
Processing Power and Memory
This CPU module runs a 16-bit microprocessor for fast instruction execution. Additionally, it offers 32 KB of RAM for program and data storage. Therefore, it handles complex control logic without performance bottlenecks.
Physical Design and Power Supply
The module measures roughly 185 x 130 x 30 mm and weighs about 0.35 kg. Moreover, it draws 5 V DC directly from the PLC backplane. As a result, no external power wiring is needed.
Interfaces and Data Retention
The 6ES5900-0AA12 provides a backplane bus connection plus a serial port for programming. Furthermore, a buffer battery preserves RAM contents during power interruptions. Consequently, critical process data survives unexpected shutdowns.
Details
| Weight | 0.72 kg |
|---|---|
| Dimensions | 325 × 168 × 8 mm |
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