Logical controllers' programming

Logical controllers' programming

2- Programming

To program means to order with clarity a group of instructions that step by step they execute operations. .

That group will have to be a send to the controller in a language structured by form to be interpreted by the Central Unit without ambiguities.

Everything it should pass as if we taught to a human being the acting of the same tasks.

2-Introduction to the programming

Logical controllers' programmingLogical controllers' programming

LOAD - LD-LOAD - LD-

2.1- Basic instructions

It begins a line or logical block with open contact.



LOAD NOT -LD NOT-LOAD NOT -LD NOT-

It begins a line or logical block with closed contact.



AND -AND- AND -AND-

It accomplishes one AND logical with the specified operator.



AND NOT -AND NOT-AND NOT -AND NOT-

It accomplishes one AND logical with the inverse state of the specified bit.



OR -OR- OR -OR-

It accomplishes a OR logical with the specified bit.



OR NOT - OR NOT – OR NOT - OR NOT –

It accomplishes a OR logical with the inverse of the state of the specified bit



OUT -OUT- OUT -OUT-

It makes the exit for the specified bit.



OUT NOT -OUT NOT- OUT NOT -OUT NOT-

It makes the inverse of the exit of the specified bit.



END -FUN (01)-END -FUN (01)-

It is obligatory the use of this instruction in the end of the program.It is Without this instruction the program it will never be executed.


Introduction of simple programs Introduction of simple programs

Example 1Example 1

Ladder DiagramLadder Diagram Statement ListStatement List

2.2- Simple Diagrams


2.2- Simple diagrams

Introduction of simple programsIntroduction of simple programs

Example 2Example 2



2.2- Simple diagrams

Introduction of simple programsIntroduction of simple programs

Example 3Example 3



AND LOAD AND LOAD

It accomplishes one AND logical among 2 blocks.


2.3- Complex Diagrams


2.3- Complex diagrams

OR LOAD OR LOAD

It accomplishes a OR logical among 2 blocks.



It retains the logical information (0 ou 1), during the treatment of the mesh where he was generated.


2.4- Temporary memory

Logical controllers' programming

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