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Results found for: IEC 61131
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IEC 61131
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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 Textual
ladder logic structured text
function block diagram instruction list
sequential function chart
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
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|--[ ]--|
| c |
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Entries before IEC 61131
IDSL
iDVD
IDX
IE
IEC
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Entries after IEC 61131
IEC 61131-3
IEC 61883
IEEE
IEEE 1284
IEEE 1394
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