Lamiae
Extrait du course structure of an instruction list program
Structure of an Instruction List program
Principal A program written in instruction list language is composed of a series of instructions executed sequentially by the PLC.
An instruction takes up a maximum of one line.
The instructions are organized into instruction statements (equivalent to a contacts network). Each instruction statement is made up of one or several instructions.
Each instruction statement begins with an exclamation mark (generated automatically), it can include a comment and can be labeled with a label.
A statement contains a maximum of 128 lines (instruction, comment, label).
In the editor a statement being input is displayed in red.
A selected statement is surrounded by a green frame.
The current statement is surrounded by a black frame.
The number of the current instruction (instruction line or label) as well as the total number of instructions in the module are indicated in the bottom panel of the window (status bar).
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Sommaire: Course structure of an instruction list program
About the Book
Part I Operating modes, general points
Presentation
Chapter 1 Setting up
Presentation
General points on PL7 software
Connections
Software installation
Chapter 2 Presentation of PL7 functions
Presentation
Configuration editor
Variables editor
Editing in ladder language
Instruction list language editing
Structured text language editor
Grafcet language editor
Animation tables
Debugging
Diagnostics
Operating screens
Structure of the documentation file
General software ergonomics
Chapter 3 Managing applications
Presentation
PL7 access security management
Accessing PL7 software
Launch Options
Creating an application
Opening an application
Protecting an Application on a PLC
Saving an application
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