Led (Ligth-Emitting Diode) dalam dunia elektronika merupakan salahsatu komponen elektronika yang masih tergolong dalam keluarga Diode/Dioda. Apa itu Diode dapat kita ketahui dan baca pada Pengenalan Diode diblog Elektronika ini. Pengertian atau Definisi LED LED merupakan singkatan dari Ligth-Emitting Diode dalam bahasa Inggris, artinya kurang lebih dioda pancaran cahaya. Jadi LED dapat kitahttp://news.chivindo.com/59/pengenalan-lampu-led-ligth-emitting-diode-.html
Basic PLC Ladder Programming Examples 23 Basic PLC Ladder Programming Training Examples for Beginners. Hi friends, here we are starting unique a series of Free Training on PLC Ladder Programming & tutorials. These PLC Ladder Programs are important to learn basics of Ladder programs. Example 7: Sequential control If we serially connect the normally closed contact of Y2 in example 5 to the circuit of Y1 as an AND condition for Y1 (as the diagram in the left hand side), the circuit can not only make Y1 as the condition for Y2, but also allow the stop of Y1 after Y2 is enabled. Therefore, we can make Y1 and Y2 execute exactly the sequential control Example 8: Oscillating circuit The ladder diagram above is a very simple one. When the program starts to scan the normally closed contact Y1, Y1 will be closed because coil Y1 is Off. When the program then scan to coil Y1 and make it On, the output will be 1. When the program scans to the normally closed contact Y1 again in the next scan
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