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How to upload an sketch to an industrial PLC using Ethernet

Step 1- Ariadne Bootloader

Introduction

In this sequence of posts, you will see how to upload a sketch to a programmable logic controller using Ethernet connection instead of using the USB. USB is the most common way to upload an sketch into an industrial Arduino board but it is not always the most comfortable way because you need to bring the industrial controller near of a PC or vice versa.


Requirements

Ethernet or 20 I/Os PLC:      Ethernet PLC        20 I/Os PLC     

Industrial Shields boards:   Industrial Shields Boards

 

Description

The sequence of posts will be divided in 3 posts in total, which are the 3 big steps to reproduce it.

  1. Install the Ariadne Bootloader into MDuino.
  2. Get the binary file from an sketch.ino
  3. Send the binary file using tftp client

 

Install the Ariadne Bootloader into MDuino.

On the first post, you will see the first step that has to be done. This step is changing the BOOTLOADER of the Arduino. Why? The Bootloader that comes by default does not support this Ethernet uploading, so it is necessary to burn another one which permits to upload via Ethernet.

The bootloaders can be found into the official github page of Ariadne. There are two different bootloaders depending on the version of the PLC controller MDuino you are using. For the PLUS version, you will be using the w5500 bootloader which is the Ethernet chip it comes with PLUS version. For the 7 version or older ones, you will use the w5100. 

You can find the bootloaders on the following links:

         Bootloader w5100 (7 version)

        Bootloader w5500 (PLUS version)

Once you have the bootloader downloaded, you need to move it into the bootloader folders. 

For Windows:

C:\Users\User\AppData\Local\Arduino15\packages\industrialshields\hardware\avr\1.0.3-rc1\bootloaders

For Linux:

 $HOME/.arduino15/packages/industrialshields/hardware/avr/1.0.3-rc1/bootloaders

It is important not to delete the original bootloader that appears on this folder. What you need to do is to change the original name of mduino.hex into mduino-original.hex and the Ariadne bootloader will get now the name of mduino.hex.

 

After that you just need to burn the bootloader. Burning a bootloader into an Arduino board is already explained in the following post.

HOW TO UPLOAD A BOOTLOADER ON AN ARDBOX/M-DUINO PLC

Note:

At this moment w5500 does not support USB. Care if you want to update an sketch into an Arduino using USB with the new bootloader. For the w5100 there is no problem.

If you liked this post, continue reading the ones below:

2nd PART: UPLOADING AN SKETCH TO A PLC USING ETHERNET. STEP 2. BINARY FILE

 3rd PART: UPLOADING AN SKETCH TO A PLC USING ETHERNET. STEP 3. TFTP CLIENT

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