Find user stories of interesting ideas and solutions in this blog.
Note: The Makers Blog shows applications and user stories of community members that are not tested or reviewed by Phoenix Contact.
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This blog will guide you through the first steps on building an application with Go on the PLCnext. For those who are unfamiliar with Go, I like to cite the reference website www.golang.org
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
A particular reason to like Go is that it is easy to create web applications but still compiles to a static binary, hence you don't have to install packages on the PLCnext controller to deploy the program.
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This demo projects would like to be an easy way to implement an automatic startup of the Axioline configuration on the local bus of the PLC Next.
The project has been developed entirely in IEC 61131 to help developer who are not used to C++ or other HighLevel languages.
To do so I used the procedure for the bus startup found in Bus Conductor (https://github.com/PLCnext/BusConductor) and I trasposed it in IEC 61131.
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This script has been developed to copy AXC F 2152’s filesystem from an external SD card to the internal SD card on a clean* AXC F 2152.
*A clean AXC F 2152 means there is no code on the controller. All code can be cleared from the controller with a Type 1 Reset.
IMPORTANT: If you have anything scheduled in cron under the root user, it will not be copied. You need to schedule scripts as admin in order for them to move to the other controller. If you need root rights for script, run this command: usermod -aG sudo admin
Pre-requisites:
To deploy this project, you MUST have a Phoenix Contact SD card (Part# 1043501 or 1061701), and your project must not exceed 400MB.
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Starting with firmware version 2020.0, AXC F 2152 devices are now "Docker Ready". A guide showing how to install Balena Engine on an AXC F 2152 is available in Github.
This tutorial demonstrates how an OCI container can be used to easily turn an AXC F 2152 into an AWS IoT Greengrass device.
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I would like to describe two different ways to remote debug a .Net Core 3.0 application with VS Code on a PLCnext target. In this post I'm using Debian 9 on my development machine and an AXC F 2152 with version: PLCnext Linux 2020.0.
- Start and debug your remote application (Press "F5" and debug)
- Attaching to remote processes
Before we could start to remote debug at our target, we have to prepare two different things. The first one is to set up the remote debugger and the second one is to enable an SSH key based authentication to the controller. The tutorial is based of two posts in the Makers Blog.
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The following post shows a workflow how to develop a .Net Core application for a PLCnext target.
It is containing two steps:
- Create a Hello World application with VS Code.
- Publish the application to the controller.
In this example I'm using Debian 9 on my development machine and an AXC F 2152 with version: PLCnext Linux 2019.9.
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IXON developed Cloud Access so you can easily access your machine's HTTP(S) server without requiring a VPN connection. This enables you to access your machine's servers on any mobile and desktop device with an internet connection.
Access and control the PLCnext webserver directly and securely from your browser. No additional software needed. Because it runs via IXON's worldwide VPN network, a speedy and seamless connection is guaranteed.
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Written by: Damian Bombeeck
Date: 10 januari 2020
Summary
In this tutorial I will show you how to connect to- and use a cloud-based database while on your PLCnext AXCF 2152 controller. We will use Microsoft Azure as the cloud-service provider and perform queries using HTTP requests. These requests will be performed in a thread so they won’t affect the real-time system. I’ll go through the different steps to take and explain why these steps are needed, furthermore I’ll include all used code and the side-notes concerning the use of Azure with PLCnext and HTTP requests in general. The tutorial is mainly focused on C++, IEC61131-3, JSON and SQL and will not include languages as C#, python or Java.
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