This document describes the installation options of the S7-400H system, quick start, installation of CPU 41x-H, S7-400H system and operation modes, connection and synchronization, use of I/O on S7-400H, communication functions, configuration using STEP 7, troubleshooting and replacement of components during operation, modification of the system during operation, synchronization templates, etc.
The manual provides detailed guidance for engineers and technicians who install, configure, and maintain the SIMATIC S7-400H fault‑tolerant system. It includes safety instructions, hardware installation steps, system operation modes, and procedures for linking and synchronizing redundant CPUs.
Additional sections cover I/O configuration, communication options, STEP 7 configuration, fault diagnosis, component replacement, and technical specifications such as power consumption and cable limits. This manual is written in Chinese.
| Maximum fiber optic cable length | 500 m |
|---|---|
| 5 V power consumption (typical) | 35 mA |
| 5 V power consumption (maximum) | 80 mA |
Remove the storage card only while the CPU is in STOP mode; otherwise the CPU will enter STOP state.