Help with weintek MT8071iE program

[rualcosi]

I need help to understand how communication with frequency inverters works in this example, as I need to add two more and I don't understand how they communicate with inverters.
I leave a copy of the HMI program so you can see it and who knows, maybe give some tips on how this was done so that I understand how I should add the two variators.
Thank you very much in advance for any and all possible help.

https://drive.google.com/drive/folders/ ... sp=sharing

[shaban]

I need help to understand how communication with frequency inverters works in this example, as I need to add two more and I don't understand how they communicate with inverters.
I leave a copy of the HMI program so you can see it and who knows, maybe give some tips on how this was done so that I understand how I should add the two variators.
Thank you very much in advance for any and all possible help.

To help you, you need to see the PLC program.

https://i.postimg.cc/ZnMgBdcr/1.jpg

[rualcosi]

Thank you, that's what i'm lokking for.