Brink Flair 300 Modbus control

Ovladani rekuperacni jednotky Brink Flair 300 pres protokol Modbus a jeji integrace do systemu openHAB.

Nezkousel jsem to, ale pravdepodobne to bude stejne fungovat i s jednotkami Flair 325 a Flair 400.

Parametry spojeni
Protocol version:	RTU
Baudrate:	19k2 (19200 Bd)
Default slave address:	20
Parity:	Even
Stop bits:	1

Hardware:

Raspberry Pi Model 3B+

Operacni system:

https://www.openhab.org/docs/installation/openhabian.html
Version: 2.5.10 (Build)

[14:48:16] openhabian@openHABianPi:~/bin$ lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description:    Raspbian GNU/Linux 9.8 (stretch)
Release:        9.8
Codename:       stretch

[14:54:40] openhabian@openHABianPi:~/bin$ hostnamectl
   Static hostname: openHABianPi
         Icon name: computer
        Machine ID: e278d9daa394410b8bcf44d5cbf0d734
           Boot ID: 95082e508e5047f8a7b7f52461d7139b
  Operating System: Raspbian GNU/Linux 9 (stretch)
            Kernel: Linux 4.14.98-v7+
      Architecture: arm

Pouzity prevodnik:

https://arduino-shop.cz/arduino/1171-prevodnik-usb-na-rs485-chip-ch340c.html

Informace o USB zarizenich:

[00:06:29] openhabian@openHABianPi:~$ ll /dev | grep ttyUSB
crw-rw----  1 root dialout 188,   0 Nov  7 00:06 ttyUSB0

[23:28:58] openhabian@openHABianPi:~$ lsusb
Bus 001 Device 009: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter
Bus 001 Device 004: ID 0424:7800 Standard Microsystems Corp.
Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Cesta /dev/ttyUSB0 se pak pouziva jako device/port pro komunikaci pres Modbus.

Command line nastroj mbpoll:

https://github.com/epsilonrt/mbpoll

Python knihovna MinimalModbus:

https://minimalmodbus.readthedocs.io/en/master/readme.html

Specifikace prikazu:

• https://www.storc.cz/wp-content/uploads/2018/11/Flair_325.pdf
  strana 53, spousta adres tam ale neni

• https://www.brinkclimatesystems.nl/getattachment/ff69a0ac-80a3-4070-8731-8f70e8cca320

openHAB Modbus binding:

https://www.openhab.org/addons/bindings/modbus/

Implementace v openHAB pro jednotku Brink Renovent Excellent 300:

https://community.openhab.org/t/brink-renovent-excellent-300-air-ventilation-integration/91373/6

Implementace

Cteni a zapis dat pres prikazovou radku pres nastroj mbpoll je popsana v souboru commands.md.

Cteni dat v python skriptu prostrednictvim knihovny MinimalModbus je v souboru brink.py.

Implementace v openHABu pres Modbus Binding (things, items, sitemap atd.) je v adresari openhab.

Prehled hodnot pro cteni/zapis je v tabulce properties.csv.

Upozorneni

Pokud pouzivate 4polohovy nastenny ovladac pro nastaveni stupne vykonu jednotky (pripojeny pres konektor X14) a chcete zacit ridit vykon pres Modbus, je potreba ovladac odpojit. Hada se to spolu. Narazove vetrani (boost) problem neni.

Ukazka zobrazeni v openHAB Basic UI