Siemens SIMATIC S7-300/400 STL Programming Reference Manual

About this manual

This document serves as a reference manual for programming the SIMATIC S7-300 and S7-400 programmable controllers using the Statement List (STL) language. It details the syntax and functionality of STL elements, including logical operations, data handling, and program control instructions. The manual is part of the STEP 7 reference materials and is intended for programmers, operators, and maintenance personnel with general automation knowledge. This manual is written in Chinese.

What's inside

• Safety Guidelines
• Required Knowledge
• Scope of Application
• STEP 7 Documentation
• Online Help
• Technical Support
• Bit Logic Instructions
• Comparison Instructions
• Counter Instructions
• Programming Examples

Frequently asked questions

What is the purpose of this manual?

This manual provides guidance for using Statement List (STL) programming language to create user programs.

What prior knowledge is required to use this manual?

Users need general automation technology knowledge and familiarity with MS Windows 2000 Professional or XP.

Which software version is this manual applicable to?

This manual applies to STEP 7 programming package version 5.3.