Basic lecture/Sequence Control Lesson

Introduction to sequence control!

Before starting the program

I will explain what I have to know at a minimum before actually creating the program. If you are actually writing the program to the PLC, the explanation here is unnecessary. It is for those who begin sequence control now, those who are beginners.

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Sequence control
I will briefly explain the sequence. If you can not hear it now, let's check it.

PLC
The programmable controllers and the sequencer are the same but we will briefly explain.

Relay
Sequence basics, relay circuit. First of all it is an introduction from here. I will explain it clearly from the beginning. It is difficult to understand ladder diagrams if this is not possible.

Input signal
Let's receive the input signal from the external device such as the sensor by relay. Once the sensor responds, the relay also ticks.

Relay control
Let's make a simple control circuit using a relay.

Ladder diagram
This is a program to write to the PLC. Ladder diagram is the basis.

This is a Japanese reference books.