Sequence control starting with Raspberry Pi - CODESYS Edition -

Introduction
Recent years, ladder-type sequence control programs, we also need to experience a little bit of the latest programs, which are programmed by adding blocks, and we need to educate our students so that they can apply them immediately in practice.

The sequence control experiments were conducted based on the simulator. Sequence control is not controlled by memorizing a special language, but by combining a-contacts and b-contacts. Moreover, since the programs of the sequence are executed from the top down, it is very easy to understand when you think of it as a programming language. Also, I hope you have learned that by using CODESYS and Raspberry Pi, it is relatively easy to conduct sequence control experiments.
　Let's use this book as a starting point to actually handle the sequencer and make use of it in practice.


1.Introduction -4


2. Raspberry Pi -6
　2.1 Raspberry Pi 3 model B
　2.2 Installing the Raspberry Pi OS
(1) Downloading the OS
(2)Connection to USB, HDMI, etc.
(3) Installing the OS
(4)USB memory
(5)Copying the screen
(6)When you want to connect to a wired LAN


3.How to use CODESYS -24
　3.1 Installing CODESYS on Windows
　3.2 Installing the Raspberry Pi package
　3.3 Creating a Ladder Program
　3.4 Simulation
　3.5 Experiment with Raspberry Pi


4.Sequence Control -65
　4.1 What is Sequence Control?


5. Basic sequence circuit -76
(1) Contact a, contact b
(2) Basic Logic Circuit
(3)Basic sequence circuit


6. Elements for the experiment -110
(1)LED
(2) Resistance (1/4W)
(3) Breadboard
(4) Jumper wire


7. Sequence Control by CODESYS -115
(1) Self-hold circuit (stop priority circuit)
(2) A circuit that repeats ON/OFF
(3) Circuit that turns on after a certain amount of time
(4) Periodic operation circuit
(5) Traffic signals


8．Sequence control experiment using Raspberry Pi -137
(1) Self-hold circuit (stop priority circuit)
(2) A circuit that repeats ON/OFF
(3)Circuit that turns on after a certain time
(4)Periodic Operation Circuit
(5) Traffic signals


References -153