Siemens S7-400H Fault-Tolerant System Service Manual

About this manual

This manual covers the SIMATIC fault‑tolerant automation system S7‑400H, describing its architecture, installation options and the steps needed to get the system up and running. It includes detailed chapters on CPU installation, special CPU functions, PROFIBUS DP mode, system status, linking and updating, and I/O usage.

Additional sections address communication setup, STEP 7 configuration, component fault handling and replacement, runtime system modifications, synchronization modules, cycle and response time calculations, and full technical specifications for CPUs and I/O modules. This manual is written in Chinese.

What's inside

• Fault‑tolerant automation system
• Installation options
• Getting started guide
• CPU installation
• Special CPU functions
• PROFIBUS DP mode
• System status and run states
• Linking and updating
• I/O usage
• Communication

Specifications

Frequently asked questions

What is the maximum length of fiber optic cable that can be used with the S7‑400H?

The manual states that the maximum cable length is 10 m.