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Many vendors whilst incorporating the full IEC 61131-3 requirements have additional vendor specific calls/function blocks to suit their hardware such as reading or writing to I/O. Siemens PLC instruction list language is known as "Statement List" or "STL" in English, and "Anweisungs-Liste" or "AWL" in German, Italian and Spanish.
A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.
The IEC 61131-3 is a standard defining the programming languages for PLCs, embedded controls, and industrial PCs, harmonizing applications independent from specific dialects, but still based on known methods such as the textual programming languages Instruction List, and Structured Text, the graphical programming languages Function Block ...
IEC 61131-3 is the third part (of 10) of the international standard IEC 61131 for programmable logic controllers.It was first published in December 1993 [1] by the IEC; the current (third) edition was published in February 2013.
Download as PDF; Printable version; ... DL05 Micro PLC; DL06 Micro Modular PLC; DL105 Fixed I/O (brick) PLC ... Text is available under the Creative Commons ...
Download as PDF; Printable version ... this article with text translated from the corresponding ... codes of the commands executed one after another by the PLC.
Structured text, abbreviated as ST or STX, is one of the five languages supported by the IEC 61131-3 standard, designed for programmable logic controllers (PLCs). [ 1 ] [ 2 ] It is a high level language that is block structured and syntactically resembles Pascal , on which it is based. [ 3 ]
PLC technicians install and repair industrial electronic equipment (including input/output networks, data highways, variable speed drives, and process control equipment) and write PLC programs for a wide variety of automated control systems, ranging from simple on–off controls to robotics. PLC technicians also find employment in the ...