Transcription of Chapter 2: Basic Ladder Logic Programming
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Chapter 2: Basic Ladder Logic Programming
Computer Aided Manufacturing TECH 4/53350 1 Chapter 2: Basic Ladder Logic Programming Computer Aided Manufacturing TECH 4/53350 2 Ladder Logic Learning objectives Understand Basic Ladder Logic symbol Write Ladder Logic for simple applications Translate relay Ladder Logic into PLC Ladder Logic Computer Aided Manufacturing TECH 4/53350 3 Simple Ladder Logic Primary Programming Language for PLCs. Visual and Graphical language unlike textual high-level, such as C, C++, Derived from relay Logic diagrams Primitive Logic Operations: OR AND NOT Ladder Logic : Computer Aided Manufacturing TECH 4/53350 4 Simple Ladder Logic OR Operation Control Behavior: The light should be on when either switch A is on ( , closed) or switch B is on (closed).
Computer Aided Manufacturing TECH 4/53350 3 Simple Ladder Logic Primary Programming Language for PLCs. Visual and Graphical language unlike textual high-level, such as C, C++, Java… Derived from relay logic diagrams Primitive Logic Operations: OR AND NOT Ladder Logic:
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