کتاب آموزش برنامه نویسی به زبان STL و SCL

The SIMATIC automation system unites all the subsystems of an automation solution under a uniform system architecture to form a homogeneous whole from the field level right up to process control. This Totally Integrated Automation (TIA) enables integrated configuring and programming, data management and communications throughout the complete automation system. As the basic tool for SIMATIC, STEP 7 plays an integrating role in Totally Integrated Automation. STEP 7 is used to configure and program the SIMATIC S7, SIMATIC C7 and SIMATIC WinAC automation systems. Microsoft Windows has been chosen as the operating system to take advantage of the familiar user interface of standard PCs as also used in office environments.

For block programming STEP 7 provides programming languages that comply with DIN EN 6.1131-3: STL (statement list; an Assemblerlike language), LAD (ladder logic; a representation similar to relay logic diagrams), FBD (function block diagram) and the S7-SCL optional package (Structured Control Language, a Pascal-like high-level language). Several optional packages supplement these languages: S7-GRAPH (sequential control), S7- HiGraph (programming with state-transition diagrams) and CFC (connecting blocks; similar to function block diagram). The various methods of representation allow every user to select the suitable control function description. This broad adaptability in representing the control task to be solved significantly simplifies working with STEP 7.

Automating with STEP 7 in STL and SCL