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SIMATIC is a series of programmable logic controller and automation systems, developed by Siemens.Introduced in 1958, the series has gone through four major generations, the latest being the SIMATIC S7 generation.
RS-422 is the common short form title of American National Standards Institute (ANSI) standard ANSI/TIA/EIA-422-B Electrical Characteristics of Balanced Voltage Differential Interface Circuits and its international equivalent ITU-T Recommendation T-REC-V.11, [2] also known as X.27.
Chakkaphat Phaen Phaeo (also Sai Tia Kaphut or Xainyachakkaphat) (1415–1481) reigned as King of Lan Xang from 1442 to 1480, succeeding the Maha Devi after an interregnum of several years. He was born in 1415 as Prince Vong Buri, the youngest son of King Samsenthai by Queen Nan Keo Yot Fa daughter of King Intharacha of Ayutthaya .
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.
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]
The dashpot timer, or mechanical timer, has changed the way we use technology. With its many industrial and commercial applications, to household appliances and gardening, the dashpot timer is a very important invention that has certainly led to many changes in how thing were done during the 20th century and how things are done in modern times.
Time-triggered systems can be viewed as a subset of a more general event-triggered (ET) system architecture (see event-driven programming).. Implementation of an ET system will typically involve use of multiple interrupts, each associated with specific periodic events (such as timer overflows) or aperiodic events (such as the arrival of messages over a communication bus at random points in time).
The Intel 8253 PIT was the original timing device used on IBM PC compatibles.It used a 1.193182 MHz clock signal (one third of the color burst frequency used by NTSC, one twelfth of the system clock crystal oscillator, [1] therefore one quarter of the 4.77 MHz CPU clock) and contains three timers.