Binding devices attributes via modbus

Hi guys,

In the documentation file it is written that:

> class `ModbusBasicDataBank` does not support binding addresses to attributes or functions of the device or interface.

So my question is what does support binding mechanism in case of modbus.
In the example on github, there is only interface layer with `ModbusBasicDataBank` which initializes addresses and values.
How I can get data from simulated device via modbus?