This QuickApp allows to read and write parameters from/on a Fronius inverter.
Whereas other QuickApp usually use the http API, which is user friendly, this QuickApp uses a deeper layer
called the Modbus TCP interface. This one is kind of a geek thing (old industrial communication protocol)
but it's, by far, much faster and also has the very useful feature to allow writing parameters, making your
inverter not only a device providing data but also a device that can be dynamically parametrized.
This is especially useful if you want to precisely manage the way you charge the Fronius storage battery.
Warning: this QA is not a final version: I've made it available on the maketplace because it contains all
the hard work (building blocks) to establish the low level communication through Modbus. Unfotunately, I
haven't found the time to finish the job but I thought it could be useful fo the Fibaro community.