Search found 10 matches
- Sun Jan 07, 2018 11:21 pm
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Re: Remeha control using RS232 port
Thank you very much for your quick reply! Actually, I'm on a short vacation abroad hence I couldn't test the code on my boiler yet. In the mean time, I'll try to find the particular data IDs for Quinta Pro but as I only have a Linux notebook available I am unable to install/extract the Recom .msi ap...
- Sun Jan 07, 2018 2:33 pm
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Re: Remeha control using RS232 port
Hello, Does anyone have any plain C code to read/write the boiler status/parameters using an arduino board? Once again, I'm talking about the boiler serial port not the OT one. I've tried to clean up the @rjblake php scripts above with no luck (as they have severe curl/network/domoticz influences). ...
- Thu Oct 13, 2016 2:55 pm
- Forum: Hvac, Heating Opentherm Forum
- Topic: Opentherm Thermostat
- Replies: 1
- Views: 6610
Opentherm Thermostat
Hi, I thought about building an Opentherm gateway at first but then I realized that it might worth to add some more functionality (by incorporating a temperature sensor and some logic) to act like a standalone thermostat, too. That's it, by reading the boiler parameters (in gateway mode), I could ma...
- Wed Oct 12, 2016 2:19 am
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Re: Remeha control using RS232 port
Looks like I'll be walking alone (in this thread) for awhile thus I'm going to tell you a little story. Back in the 2012, I've just discovered this forum (and @Digit blog for that matter) and I was very impressed by the possibilities of fully controlling a HVAC system (Remeha boiler). As I was in th...
- Tue Oct 11, 2016 6:51 pm
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Re: Remeha control using RS232 port
I've tried to add a further comment to my first post but the messages was in "moderated" stage for a whole day then it just vanished. Could anyone (mod) tell me why that message was censored? I was just asking if the communication through the RS232 port is "read only" on purpose ...
- Tue Oct 11, 2016 4:20 am
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Re: Remeha control using RS232 port
Looks like all the scripts written for the Remeha RS232 port communications only read data from the boiler. I thought this serial port is a decoded OT interface (TTL compatible). Am I wrong? Is this serial interface made "read only" on purpose (by the manufacturer)? The Recom software (whi...
- Mon Oct 10, 2016 8:30 pm
- Forum: Hvac, Heating Opentherm Forum
- Topic: Remeha control using RS232 port
- Replies: 13
- Views: 17703
Remeha control using RS232 port
Hi, It is possible to control a Remeha boiler (set point, status and so on) using the RS232 port? As far as I've read, everybody is using the OT port (by implementing a gateway). I don't have any OT thermostat (nor gateway) thus I want to control the boiler using an Arduino through a serial connecti...
- Tue Dec 04, 2012 4:29 pm
- Forum: Home Automation Projects
- Topic: Remeha Calenta interface for Homeseer
- Replies: 144
- Views: 215154
Re: Remeha Calenta interface for Homeseer
I'm using quite a long cable (20m) but I put the RS232 converter at boiler's side (that's it, the MAX232 itself powered by the boiler's 4th pin) and the RS232-to-USB adapter at PC's side. You could try it too, by using two MAX232 (one at each end) to reproduce the TTL levels at laptop's side, to use...
- Sat Nov 17, 2012 1:46 am
- Forum: Home Automation Projects
- Topic: Remeha Calenta interface for Homeseer
- Replies: 144
- Views: 215154
Re: Remeha Calenta interface for Homeseer
Well guys.. I found my answer! I had to swap the Rx/Tx signals from the boiler. Actually, on Robert's page , the boiler Tx/Rx signals are from the RS232 side. But the boiler is "emitting" through third pin and is receiving through the second one. So the correct pinout are: 1-> GND; 2->RXD;...
- Fri Nov 16, 2012 1:29 am
- Forum: Home Automation Projects
- Topic: Remeha Calenta interface for Homeseer
- Replies: 144
- Views: 215154
Re: Remeha Calenta interface for Homeseer
Hello @bus147, I've just bought a new boiler (Remeha Quinta Pro 45) and I want to monitor/control it via PC. I also bought a RS232 to USB adapter and I built myself a TTL to RS232 adapter (MAX232). Unfortunately, Recom software refuse to see my boiler (I'm using latest Recom software version - v5.1....