PLC Programmable Logic Controller

PLC (programmable logic controller)
AVAILABLE : MIT5UBISHI ELECTRIC,OMRON,ABB,SCHNEISER ELECTRIC,EATRON,ALLEN BRADLEY,SIEMENS
A programmable logic controller (PLC), or programmable controller is an industrial digital computer which has been ruggedised and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis.

They were first developed in the automobile industry to provide flexible, ruggedised and easily programmable controllers to replace hard-wired relays and timers. Since then they have been widely adopted as high-reliability automation controllers suitable for harsh environments. A PLC is an example of a "hard" real-time system since output results must be produced in response to input conditions within a limited time, otherwise unintended operation will result.
Kontrol logika terprogram (bahasa Inggris: programmable logic controller atau PLC) adalah suatu mikroprosesor yang digunakan untuk otomasi proses industri seperti pengawasan dan pengontrolan mesin di jalur perakitan suatu pabrik. PLC memiliki perangkat masukan dan keluaran yang digunakan untuk berhubungan dengan perangkat luar seperti sensor, relai, contactor dll. Bahasa pemrograman yang digunakan untuk mengoperasikan PLC berbeda dengan bahasa pemrograman biasa. Bahasa yang digunakan adalah Ladder, yang hanya berisi input-proses-output. Disebut Ladder, karena bentuk tampilan bahasa pemrogramannya memang seperti tampilan tangga. Disamping menggunakan pemrograman ladder,