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Denne bog giver en introduktion til programmeringssproget Struktureret Tekst (ST) der benyttes i Programmerbare Logiske Controllere (PLC)Indhold:- Baggrund, fordele og udfordringer ved ST-programmering - Syntaks og grundlæggende ST-programmering - Stor guide til fornuftig navngivning af variabler- CTU, TOF, TON, CASE, STRUCT, ARRAY, STRING- Guide til opdeling i program moduler og funktioner- Mere end 90 PLC-kode eksempler i farver- FIFO, RND, 3D ARRAY, digitalt filter - Eksempler: Kom fra LADDER over til ST-programmering- Guide til løsning af programmeringsopgaverBogen går systematisk frem med beskrivelse af de grundlæggende ST-begreber og programmering, herunder tips, og med inddragelse af forfatterens 25 års praktiske erfaring. Der er mange steder uddybende forklaringer til PLC-koden og der er fokus på at læseren lærer at skrive robust, læsbar, struktureret og overskuelig PLC-kode. Desuden fokuseres på at kunne skrive PLC-kode, som ikke kræver en bestemt PLC-type og PLC-kode der kan genbruges, samt PLC-løsninger, der kan benyttes internationalt. Grundlaget for bogen er et materiale, som er udarbejdet løbende med feedback fra undervisere og studerende på automationsteknolog-uddannelsen hos Erhvervs-akademi Dania. Materialet er således løbende opdateret, så det giver svar på de spørgsmål og udfordringer, de studerende typisk har gennem deres studie.ST-programmering til PLC-styringer er fra omkring år 2010 begyndt at blive mere udbredt i Danmark, og siden år 2015 er mange virksomheder i Danmark begyndt udelukkende at levere PLC-styringer, hvor der benyttes ST som det foretrukne programmeringssprog. Dette kræver at flere medarbejdere kan ST og det er et af argumenterne, for at udgive denne bog.Bogen er primært udarbejdet til brug på den videregående fuldtidsuddannelse Automationsteknolog og deltidsuddannelsen Automation og Drift.
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 programmingThe 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.
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 programmingThe 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.
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