The SIEMENS SIMATIC S7-200 PLC CPU-221 DC-DC, order number 6ES7 211-0BA23-0XB0, is a robust, compact controller designed for entry-level automation tasks requiring minimal I/O. As the smallest member of the S7-200 family, this CPU integrates 6 DC inputs and 4 DC outputs in a single unit, eliminating the need for expansion modules in simple applications. It operates on a 24V DC supply and features a built-in RS-485 interface for PPI communication, enabling straightforward connection to operator panels or other S7-200 CPUs. With a program memory capacity of up to 6KB and a dedicated data memory block, the CPU-221 efficiently handles basic logic, timing, and counting functions. It is programmed using the familiar STEP 7-Micro/WIN software, ensuring ease of configuration and deployment. This unit is engineered for standard industrial environments, with an operating temperature range of 0°C to 55°C and humidity tolerance up to 95% non-condensing. Whether used as a standalone controller for a small packaging machine or as part of a distributed control system, the CPU-221 DC-DC delivers reliable, cost-effective performance.
| Specification |
Details |
| Product Type |
SIMATIC S7-200 CPU 221 DC/DC/DC |
| Order Number (MLFB) |
6ES7 211-0BA23-0XB0 |
| Power Supply Voltage |
24V DC (20.4 to 28.8V DC) |
| Digital Inputs |
6 DC inputs (sink/source, 24V DC, type 1) |
| Digital Outputs |
4 DC outputs (transistor, 24V DC, 0.75A per output) |
| Program Memory |
6 KB (user program and data storage) |
| Data Memory |
2 KB (retentive) |
| Communication Interface |
1 x RS-485 (PPI protocol, up to 187.5 kbps) |
| Real-Time Clock |
Yes, with battery backup (optional) |
| Expansion Capability |
None (no expansion module support) |
| Operating Temperature |
0°C to 55°C (horizontal installation) |
| Storage Temperature |
-40°C to 70°C |
| Relative Humidity |
5% to 95% (non-condensing) |
| Programming Software |
STEP 7-Micro/WIN (V4.0 SP9 or later) |
| Dimensions (W x H x D) |
80 x 80 x 62 mm |
| Weight |
Approximately 0.27 kg |
| Protection Class |
IP20 (with front cover) |
| Certifications |
CE, cULus, FM |
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