How debug A data monitoring website for PLC

I'm currently working on a project myself. We are trying to make Mitsubishi PLC data accessible over the internet. Can you guide me through the steps

I want to set up a website using Python/Flask and install the Pymodbus extension to proceed from here. How can I continue? If you have any other suggestions that might be easier, I'm open to recommendations.

First of all in order to secure your installation, let's not grant direct access to your website to all the internet. Whats I would do :

1. Host a python website server somewhere
2. Run locally (on your hardware installation, whatever it is) a script to send data (request.post) to the website server. And then serve the aggregated data in a client web page. That way the data are accessible from anywhere in the world, but without opening access to the hardware itself...

If you want to give it a try easily I would advice to use AWS Elastic Beanstalk which is an easy way to setup (for free) a Python Env and play with it