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Compact Micro PLC for Basic to Mid-Level Control Tasks
The Siemens 6ES7212-1BB20-0XB0 CPU 222 is a compact programmable logic controller from the SIMATIC S7-200 series. This micro PLC provides a cost-effective solution for small to medium-scale automation applications . It features a highly integrated design that saves valuable cabinet space. The unit includes 8 digital inputs and 6 digital outputs (relay type) . Moreover, it supports flexible system expansion with up to 2 extension modules . Therefore, this CPU is an ideal choice for both standalone and networked control tasks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Product Type | CPU 222 Compact Unit |
| Part Number | 6ES7212-1BB20-0XB0 |
| Series | SIMATIC S7-200 |
| Power Supply | 20.4 to 28.8 V DC |
| Program Memory | 4 KB |
| Data Memory (V-Memory) | 2 KB |
| Digital Inputs | 8 |
| Digital Outputs | 6 (Relay type) |
| Communication Interface | 1 x RS-485 (PPI/MPI/Freeport) |
| High-Speed Counters | 4 x 30 kHz |
| Pulse Outputs | 2 x 20 kHz |
| Max. Expansion Modules | 2 |
| Dimensions (W x H x D) | 90 x 80 x 62 mm |
| Power Loss (typ.) | 5 to 7 W (depending on variant) |
Compact Design and Integrated Functionality
The Siemens 6ES7212-1BB20-0XB0 integrates a 24 V DC sensor supply with 180 mA output current for direct sensor connection . It provides up to 4 fast counters for precise high-speed signal acquisition . The integrated RS-485 interface supports PPI, MPI, and Freeport communication protocols . The CPU also features real-time clock support for time-stamping process events .
System Integration and Application Versatility
The Siemens 6ES7212-1BB20-0XB0 uses the STEP 7-Micro/WIN engineering software for straightforward programming . It supports extension with up to 2 modules for added I/O capacity . Consequently, this CPU is suitable for a wide range of applications, including simple machine control and environmental monitoring . Its compact footprint and powerful instruction set make it a reliable choice for cost-sensitive projects.