This document is an exam manual for the system software and standard functions of SIMATIC S7-300/400. The manual covers topics such as organization blocks, SFCs, system and standard functions, IEC functions, etc. It also includes appendices on diagnostic data, system status lists, and events. The manual is intended for programmers and engineers familiar with control processes, and is used for programming programmable controllers.
This reference manual provides detailed information on the system software and standard functions of the Siemens SIMATIC S7‑300 and S7‑400 programmable controllers. It is intended for programmers and engineers who develop control programs for these PLC families.
The document is organized into sections on organization blocks (OB), system functions (SFC), function blocks (SFB), IEC‑FC functions, diagnostic data, system status lists (SZL), events, and communication features. It also includes a glossary of terms and references to related STEP 7 manuals. This manual is written in Chinese.
| CPU model code | 6ES7810-4CA |
|---|---|
| STEP 7 software version | V5.2 |
The functions are programmed with the STEP 7 standard software, version V5.2.
Refer to the "S7‑300 programmable controller hardware and installation manual" and the "S7‑400 programmable controller template specification manual" for CPU‑specific information.