Remeha advanta\calenta Central Heating

[Fabnik1s]

Hello,

Is ther a Way to add my Remeha avanta 35C through serial.

I already have a Serial Port Working with the Remeha
but how do i add this in domotics ?

see link below For the serial details.
http://blog.hekkers.net/2010/10/03/moni ... a-calenta/

gr Fabian

[Fabnik1s]

so nobody can tell me how to add the serial connection ?

[Mediacj]

Nice information, you could make a php script to put it into Domoticz. See the Domoticz wiki for json options. Also look at this page: https://www.domoticz.com/wiki/Extractin ... s_with_PHP

But this interface is only monitoring? There is no way to change the setpoint?

[mickeyr61]

I made a cable (like this one found here http://blog.hekkers.net/2011/03/14/reme ... revisited/ ). I think the cable is working OK, but I cannot get any data from the Remeha Calenta 40W. I have used the official Remeha program and the OTMonitor program. Any tips?

[stlaha2007]

As far i can read, the cable is ment to be used by the software Remeha Recom. Which has the ability to export the info to file.

What your trying to do is interfacing improperly.
You need to write/build your interface-program yourself.

OTGW is hardware, like this cable.
OTGW is nativly supported by Domoticz with programlogic which translates info from/to OTGW to/from Domoticz.

Sent from my D6603 using Tapatalk

[rjblake]

I made a cable (like this one found here http://blog.hekkers.net/2011/03/14/reme ... revisited/ ). I think the cable is working OK, but I cannot get any data from the Remeha Calenta 40W. I have used the official Remeha program and the OTMonitor program. Any tips?

@mickeyr61, I connected an FTDI cable (simple Adafruit FTDI Friend) to my Calenta 40C and managed to get Recom to recognise and work just fine (can read and write to Calenta). I have also connected an ESP8266 directly to the Calenta RS232 port and can send/receive data using RealTerm (don't use Putty or other as cannot send/receive HEX). When you say 'I think the cable is working', what makes you think that? Have you managed to get Recom working? If not, I'd say your cable is not working (perhaps RX & TX are swapped). If Recom is connecting and and receiving data, then you can move on to the next step. If you want to send/receive info over the serial, you'll need a terminal emulator that sends/received HEX. RealTerm (windows) is tried and tested and known to work. In addition, you'll need to send a command to the Calenta to get a response. It does not send a constant stream of data, but a single response each time you send the command. I understand this varies by model and revision (for my Calenta it is 0x02 0xFE 0x01 0x05 0x08 0x02 0x01 0x69 0xAB 0x03)

OTMonitor is specific to the Opentherm Gateway has no relevance in the RS232 connection from PC to Calenta.