This book gives an introduction to the programming language Structured
Text (ST) which is used in Programmable Logic Controllers (PLC). The
book can be used for all types of PLC brands including Siemens
Structured Control Language (SCL) and Programmable Automation
Controllers (PAC). This 3rd edition has been updated and expanded with
many of the suggestions and questions that readers and students have
come up with, including the desire for many more illustrations and
program examples. CONTENTS: - Background, benefits and challenges of ST
programming - Syntax, data types, best practice and basic ST
programming - IF-THEN-ELSE, CASE, FOR, CTU, TON, STRUCT, ENUM, ARRAY,
STRING - Guide for best practice naming, troubleshooting, test and
program structure - Sequencer and code split-up into functions and
function blocks - FIFO, RND, sorting, scaling, toggle, simulation
signals and digital filter - Tank controls, conveyor belts, adaptive
pump algorithm and robot control - PLC program structure for pumping
stations, 3D car park and car wash - Examples: From Ladder Diagram to ST
programming The book contains more than 150 PLC code examples with a
focus on learning how to write robust, readable, and structured code.
The book systematically describes basic programming, including advice
and practical examples based on the author´s extensive industrial
experience. The author is Bachelor of Science in Electrical Engineering
(B.Sc.E.E.) and has 25 years´ experience in specification, development,
programming and supplying complex control solutions and supervision
systems. The author is Assistant Professor and teaches PLC programming
at Dania Academy, a higher education institution in Randers, Denmark.
