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The three pillars of OOP
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2020

How to configure an array monitoring range
TwinCAT and MQTT - Part 1 Getting started
TwinCAT and MQTT - Part 2 JSON messages

2019

A Code Jam challenge with Structured Text
How to use monitoring attributes
The three pillars of OOP - Encapsulation
The three pillars of OOP – Inheritance
The three pillars of OOP – Polymorphism
Keep your online view clean: The hiding attributes
The ABSTRACT keyword
TwinCAT UML class diagram
Fluent interface in Structured Text
Getting started: Home Assistant and TwinCAT

Featured posts

Domotica, IEC 61131-3

Getting started: Home Assistant and TwinCAT
In this Getting started: Home Assistant and TwinCAT I'll show that basics of setting up communication between Home Assistant and TwinCAT.
Domotica, IEC 61131-3

TwinCAT and MQTT – Part 1 Getting started
MQTT is an extremely lightweight publish/subscribe messaging transport protocol. Because it is such a lightweight protocol MQTT is widely used in IOT devices. This series of posts show the basis of MQTT and TwinCAT together with some more advanced examples using JSON.
IEC 61131-3

Fluent interface in Structured Text
A popular programming design in high level languages as C# is the so-called 'fluent code' or 'fluent interface'. But what is a fluent interface and how can we implement this in Structured Text? In this post I briefly explain what a fluent interface is and give an example of a fluent interface in Structured Text.
Domotica, IEC 61131-3

TwinCAT and MQTT – Part 2 JSON messages
In the previous post "TwinCAT and MQTT – Part 1 Getting started" We covered the basics for MQTT in TwinCAT. Using the Mosquitto broker and two PLC we were quickly able to exchange messages between the PLC, and later on we read the messages with a smartphone too. In part 1 we published a simple string indicating the room temperature. However in real life we soon want to send more data and parameters in one message ...
IEC 61131-3

TwinCAT UML class diagram
When working with OOP concepts as discussed in the series "The three pillars of OOP" it might get hard to keep track of your program architecture when your program grows. As this is a common struggle in the world of the programming some smart people came up with the Unified Modeling Language. Or short UML. With UML we can visualize and develop our software graphically. In this post I'll show how to generate an UML ...

TwinCAT UML class diagram
When working with OOP concepts as discussed in the series "The three pillars of OOP" it might get hard to keep track of your program architecture when your program grows. As this is a common struggle in the world of the programming some smart people came up with the Unified Modeling Language. Or short UML. With UML we can visualize and develop our software graphically. In this post I'll show how to generate an UML class diagram in TwinCAT.

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TwinCAT and MQTT – Part 2 JSON messages
TwinCAT and MQTT – Part 1 Getting started
How to configure an array monitoring range
Getting started: Home Assistant and TwinCAT
Fluent interface in Structured Text

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Domotica
IEC 61131-3
The three pillars of OOP

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