The Siemens SIMATIC S7-200 CPU 221 (6ES7 211-0AA23-0XB0) is a robust, entry-level programmable logic controller engineered for compact automation tasks. It delivers reliable performance for small machines, conveyors, and simple process control systems. With its integrated digital I/O and RS-485 communication, this CPU serves as a cost-effective backbone for standalone or minimal-expansion applications, ensuring seamless integration into existing S7-200 ecosystems.
| Parameter |
Specification |
| Product Type |
SIMATIC S7-200 CPU 221 |
| Part Number |
6ES7 211-0AA23-0XB0 |
| Power Supply |
24 V DC (20.4 to 28.8 V DC) |
| Digital Inputs |
6 (24 V DC, type 1 sink/source) |
| Digital Outputs |
4 (24 V DC, transistor, 0.75 A each) |
| Program Memory |
4 KB (typical, with 2 KB instructions) |
| Data Memory |
2 KB (retentive) |
| Communication Port |
1 x RS-485 (PPI protocol, up to 187.5 kbps) |
| Expansion Capability |
None (standalone unit) |
| Operating Temperature |
0 to 55 °C |
| Dimensions (W x H x D) |
80 x 80 x 62 mm |
| Weight |
Approx. 270 g |
- CPU Processing Power: Executes basic logic instructions at 0.37 µs per bit operation for fast scan cycles.
- Built-in Features: Integrated real-time clock, 256 timers, and 256 counters for versatile control logic.
- Environmental Adaptability: Rated for standard industrial environments with 95% non-condensing humidity.
- Programming Software: Fully compatible with STEP 7-Micro/WIN (V4.0 SP9 or later) for ladder logic, FBD, and STL programming.
- Standalone Solution: Designed for simple automation tasks like motor start/stop, conveyor control, and signal monitoring.
- Certifications: CE, cULus, and FM approved for global industrial deployment.
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22