Communication Between Ignition and Python Program via Mosquitto

Maker
1

Hello everyone,

I am working on a project where I want to integrate Ignition Maker Edition with a Python program using Mosquitto for communication. However, I am encountering an issue with the data format that I receive in my Python program.

Here is the data format I send:

{
"DoorClosed": false
}

But this is what I receive:

�Нލ2
oorClosed�ȝލ2
8Jp

I have also tried using the MQTT server module from Ignition itself, but I encountered the same problem.

Interestingly, when I use other MQTT publishers, the received data is correctly formatted

My goal is to perform some initial testing, so I would appreciate any guidance or suggestions on how to resolve this formatting issue.

Thank you in advance for your help!

Best regards,
Safi

2

You need to configure the MQTT Engine module to use a Custom namespace, otherwise it assumes that incoming data is in Sparkplug format.

https://docs.chariot.io/display/CLD80/MQTT+Engine+Custom+Namespace

3

Thank you for the quick response!

Specifically, I am interested in how to utilize this namespace within my Python program.

Any guidance on how to implement or handle this namespace configuration in Python would be very helpful.

Thank you!

4

Check our open-source Sparkplug python clients at