This document presents a comprehensive technical overview of the Siemens S7-200CN programmable controller family, including CPU variants, digital and analog expansion modules, temperature (RTD/thermocouple) modules, positioning and weighing modules, as well as communication options and HMI panels. Detailed wiring diagrams, DIP‑switch configurations and ordering information are supplied for each module type.
The sample also lists the electrical specifications, I/O capacities, memory sizes and supported communication protocols (RS‑232/485, USB, PPI, Ethernet, Modbus, etc.), making it a useful reference for system designers and integrators planning an S7‑200CN based automation solution. This manual is written in Chinese.
| CPU 222 CN I/O | 8 DI / 6 DO |
|---|---|
| Power Supply Input | 20‑28 V DC |
| Integrated Analog Channels | 2 AI / 1 AO |
| Program Memory | 4096 B |
| Communication Ports | RS‑232 / RS‑485, USB, PPI |
The CPU accepts a DC input of 20 V to 28 V.
CPU 222 CN provides 8 digital inputs.
It includes RS‑232/RS‑485 ports, a USB interface and a PPI programming port.