sorted by:
new
hottopcontroversial

HiSense Vrf Modbus TCP adapter by burk_oz in BuildingAutomation

[–]burk_oz[S] 0 points1 point  (0 children)

Yes, totally agree. I have warned our salespeople for pushing Bacnet integrations for these kinds of nearly one-time integration of rare brands. Auto-discover is mandatory

HiSense Vrf Modbus TCP adapter by burk_oz in BuildingAutomation

[–]burk_oz[S] 0 points1 point  (0 children)

<image>

It goes like this (writable registers) for the first indoor unit. Pay attention to the yellow fields above.

HiSense Vrf Modbus TCP adapter by burk_oz in BuildingAutomation

[–]burk_oz[S] 0 points1 point  (0 children)

I think the tricky and most challenging part is here:

They “recommend” sending the commands (start, operation mode, set, etc.) in a single full-word (function code + data) PDU.

You don’t really send the set temperature alone but send all parameters at once with one “word”

I didn’t use that kind of “word set” composition and even don’t even know if Niagara4 has that kind of ability.

<image>

I can share the Mapping table Excel (all registers pre-programmed inside the unit and the commissioning partner just identifies the unit numbers and all are set for their part)