The manual provides an overview of the SIMATIC S7-300 programmable controller, its modular hardware architecture and the range of I/O, power and communication modules available. It describes the system structure, installation on DIN rails, and the flexible expansion options for various industrial applications.
Detailed sections explain connection methods, power supply requirements, communication interfaces (MPI, PROFIBUS, Ethernet), diagnostic functions and module replacement procedures, helping users configure and maintain the controller safely and efficiently. This manual is written in Chinese.
| Standard temperature range | 0 °C to 60 °C |
|---|---|
| Extended temperature range | -25 °C (lower limit) |
| Maximum cable length for IM modules | 10 m |
| Maximum CPUs per rack | 8 CPUs |
The standard S7-300 operates from 0 °C to 60 °C.
IM modules can be connected with cables up to 10 meters long.
Each rack can accommodate up to 8 CPUs.