Siemens S7-400H Fault‑Tolerant System User Manual

About this manual

This manual introduces the SIMATIC S7‑400H fault‑tolerant automation system, covering safety instructions, required background knowledge, and an overview of the hardware components such as CPU 414‑4H and 417‑4H modules. It also lists the order numbers for the system and its modules, and explains the applicable standards and certifications.

The document details installation options, coupling and synchronization methods, I/O usage, communication functions (Profibus DP, MPI, Ethernet), and how to configure the system with STEP 7 software. Additional sections describe component fault handling, system modification during operation, synchronization modules, cycle times, technical specifications, and provide an appendix with a glossary and index. This manual is written in Chinese.

What's inside

• Safety Guide
• Installation Options
• System and Operating Modes
• Coupling and Synchronization
• Using I/O
• Communication Functions
• STEP 7 Configuration
• Component Faults and Replacement
• Technical Specifications
• Appendix

Specifications

Frequently asked questions

What safety symbol is used for personal safety hazards?

The manual highlights personal‑safety related notes with a safety‑warning symbol.

Which software is required to configure the S7‑400H system?

STEP 7 basic software, version V5.2 SP1 HF3, is required for configuration.

How can technical support for the S7‑400H be obtained?

Technical support can be requested via the Siemens website or by calling the provided phone numbers.