Direct connection between HmIP-WTH-2 and HmIP-eTRV-2

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StefanD
Beiträge: 14
Registriert: 17.11.2016, 10:42

Direct connection between HmIP-WTH-2 and HmIP-eTRV-2

Beitrag von StefanD » 07.12.2018, 14:10

Hello all,

I have an HmIP-WTH-2 and HmIP-eTRV-2 and after a lot of searching I found this in the WEBUI Handbuch:

Für eine vollständige Verknüpfung zwischen Wandthermostat und Heizkörperthermostat ist es
notwendig, die Geräte über 3 Kanäle miteinander zu verknüpfen:
• Wandthermostat Kanal 1 mit Heizkörperthermostat Kanal 6
• Wandthermostat Kanal 2 mit Heizkörperthermostat Kanal 5
• Wandthermostat Kanal 3 mit Heizkörperthermostat Kanal 3

This indeed works fine, but I wonder about the logic of this configuration.
In "Homematic IP Devices - Technical Documentation" dated 26.10.2018, I found the following descriptions of the channels:

HmIP-WTH-2: (page 8144)
Channel number Channel type
0 MAINTENANCE_BAT_CL
1 HEATING_CLIMATECONTROL_TRANSCEIVER
2 HEATING_CLIMATECONTROL_RECEIVER
3 HEATING_CLIMATECONTROL_CL_TRANSMITTER
4 HEATING_SHUTTER_CONTACT_RECEIVER
5 HEATING_CLIMATECONTROL_SWITCH_TRANSMITTER
6 HEATING_KEY_RECEIVER
7 CLIMATECONTROL_FLOOR_TRANSMITTER

HmIP-eTRV-2: (page 7842)
Channel number Channel type
0 MAINTENANCE_BAT_BL
1 HEATING_CLIMATECONTROL_TRANSCEIVER
2 HEATING_CLIMATECONTROL_RECEIVER
3 HEATING_CLIMATECONTROL_CL_RECEIVER
4 HEATING_SHUTTER_CONTACT_RECEIVER
5 HEATING_ROOM_TH_TRANSCEIVER
6 HEATING_ROOM_TH_RECEIVER
7 HEATING_KEY_RECEIVER

Unfortunately this does not give me the slightest clue why exactly those connections listed in the WEBUI Handbuch have to be created.
Although the system works fine, I like to understand the logic behind it.

Another question: In the WEBUI handbuch I also read:

Bei der Verknüpfung zwischen Heizkörperthermostat und Heizkörperthermostat ist die Verknüpfung
über 2 Kanäle notwendig:
• Heizkörperthermostat Kanal 1 mit Heizkörperthermostat Kanal 2
• Heizkörperthermostat Kanal 2 mit Heizkörperthermostat Kanal 1

Are these connections also required when 2 HmIP-etrv-2's are connected to one HmIP-WTH-2?

Best regards, Stefan.

tomi_cc16
Beiträge: 467
Registriert: 30.11.2013, 16:35
Wohnort: Mordor

Re: Direct connection between HmIP-WTH-2 and HmIP-eTRV-2

Beitrag von tomi_cc16 » 07.12.2018, 14:36

I guess you copied it from the German WebUI manual?

Was the english translation not ok?

StefanD
Beiträge: 14
Registriert: 17.11.2016, 10:42

Re: Direct connection between HmIP-WTH-2 and HmIP-eTRV-2

Beitrag von StefanD » 07.12.2018, 15:04

You got me there :-)
My current network does not allow access to dropbox, so I haven't been able to download it yet.
It's great to have an English version, although my German is good enough to be able to read the original version.
Does the English version offer an explanation, or is it "just" a translation of the German version?

blueznl
Beiträge: 47
Registriert: 29.11.2014, 18:09

Re: Direct connection between HmIP-WTH-2 and HmIP-eTRV-2

Beitrag von blueznl » 08.12.2018, 13:39

I don't have the IP version, but I think I only connected one channel.

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