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The Siemens 6ES7216-2BF22-0XB0 serves as a compact CPU for the SIMATIC S7-200 micro PLC platform. This integrated unit combines CPU, power supply, and I/O in a single housing. The controller handles small to medium automation applications with cost-effective performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Compact CPU unit |
| Model | CPU 226 XM |
| Program Memory | 16 KB |
| Data Memory | 10 KB |
| Digital Inputs | 24 x 24V DC (integrated) |
| Digital Outputs | 16 x 24V DC / 0.5A (transistor) |
| Total I/O Points | 40 I/O (24 IN / 16 OUT) |
| Expandable I/O | Up to 7 expansion modules |
| Communication Ports | 2 x RS-485 (PPI, MPI, freeport) |
| Built-in Potentiometers | 2 x analog (for setpoint adjustment) |
| Real-Time Clock | Integrated (battery-backed) |
| Processing Time (bit) | 0.37 µs (typical) |
| Dimensions (W x H x D) | 196 x 80 x 62 mm |
| Weight | 0.6 kg |
| Internal Components | 1 x CPU core, 1 x power supply, 2 x UART controllers |
| Energy Storage | SuperCap + battery (100h backup) |
| Power Supply | 24V DC (20.4V – 28.8V) |
| Power Consumption | 15W (typical) |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Protection Class | IP20 |
| Mounting | DIN rail or panel |
| Approvals | CE, UL, CSA |
Integrated I/O for Small Applications
The Siemens 6ES7216-2BF22-0XB0 includes 24 digital inputs and 16 digital outputs onboard. This integrated I/O eliminates the need for separate modules in small applications. The 24V DC transistor outputs drive actuators and indicators directly. Users can add up to 7 expansion modules for larger installations.
Fast Processing for Responsive Control
The CPU executes bit operations in 0.37 µs for rapid control loops and logic processing. This speed suits applications with high-speed counting and fast response requirements. The processor handles simple PLC tasks efficiently without latency. Users can implement time-critical functions with confidence.
Dual Communication Ports for Networking
Two RS-485 ports support PPI, MPI, and freeport protocols for flexible connectivity. These ports enable communication with HMIs, drives, and other PLCs. Users can program the CPU through either port using STEP 7 Micro/WIN. The ports support multi-drop networking for distributed applications.
Built-in Analog Adjustments and Real-Time Clock
Two onboard potentiometers provide analog setpoint adjustments without external devices. Users can set timers, counters, or process values through these potentiometers. The integrated real-time clock enables time-stamped events and scheduled operations. A SuperCap with battery backup maintains the clock for 100 hours without power.
Expandable Architecture for Future Growth
The CPU 226 XM accommodates up to 7 expansion modules for increased I/O capacity. This scalability allows the system to grow with the application needs. Users can add analog modules, communication modules, or additional digital I/O. The expansion bus connects seamlessly through the side-mounted interface.
Rugged Compact Design for Control Cabinets
The unit measures 196 x 80 x 62 mm and weighs 0.6 kg for easy mounting. The compact footprint saves space in crowded control panels and enclosures. Users can mount the unit on DIN rails or directly to backplates. The IP20-rated housing protects against accidental contact and dust ingress.