Haward heat pump, pump and salt system

I am new about swiming pool…
I choose Hayward for all electric material.
I will buy heat pump, variable speed pump, salt system (electrolyse) and may be ozone.
I would like to know If I can connect all device with the RS485 bus ?
Is that need to have an expensive logic controlor ?
And Is that possible to do with Home Assistant ?
Can I have some automation to control the swiming pool ?

Is the protocol know for the heat pump for exeample ?

Many thanks for your help !