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Hi I have Unitronics V570 controlling my home's central heating system and I would like to make a webpage, that I can visit on my computer to see values from controller. But the thing is that I want to have a line graph to show temperatures from the past measurements. I have no clue on how to do so, because as far as I understand, you can't get values from data table(which probably will be stored on SD card) to your webpage, you can only get things like MIs and MBs and such. Only way I have figured out to get said graphs is to download data table from controller to computer and then do some magic, but that is not the solution I am looking for. Other question I have is how to connect Arduino board to PLC in a way, that I can get values from PLC's MIs to Arduino.I want to have remote temperature controller in other room with small screen. Can I somehow send serial values from PLC to Arduino or do I need CanBUS module for my Arduino? Thanks in advance.