IEC 61131

A family of programming languages for programmable logic controllers (PLCs). Of the three graphical and two textual languages, ladder logic (see example below) was the first language and widely used. IEC 61131 was previously known as IEC 1131. See PLC.

Graphical ladder logic function block diagram sequential function chart Textual structured text instruction list

The following example of ladder logic shows how logical AND and OR gates are diagrammed. In this case, x = a AND (b OR c).

 ---[ ]-----|--[ ]--|-----( )--- a | b | x | | |--[ ]--| | c |

单词	iec 61131
释义	DictionarySeeplc IEC 61131 IEC 61131 A family of programming languages for programmable logic controllers (PLCs). Of the three graphical and two textual languages, ladder logic (see example below) was the first language and widely used. IEC 61131 was previously known as IEC 1131. See PLC. Graphical ladder logic function block diagram sequential function chart Textual structured text instruction list The following example of ladder logic shows how logical AND and OR gates are diagrammed. In this case, x = a AND (b OR c). ---[ ]-----\|--[ ]--\|-----( )--- a \| b \| x \| \| \|--[ ]--\| \| c \| FinancialSeePlc
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