[120] opentherm gateway

[CaptainSlow]

With the Remeha Tzerra and the Kiwi bought OTGW with esp8266 wifi to serial bridge the only value for that works without errors is VR=1. All the other values, especially the higher ones gave me all but error 03's....

[rjblake]

With the Remeha Tzerra and the Kiwi bought OTGW with esp8266 wifi to serial bridge the only value for that works without errors is VR=1. All the other values, especially the higher ones gave me all but error 03's....

Did you use a higher rated transformer and change out the 7805 for the Recom DC/DC converter? If not, that may be the reason. The parts needed, with Conrad.nl part number are:

RECOM R-78E5.0-0.5 DC/DC-converter, print 24 V/DC 5 V/DC 500 mA (part 157954 - 89)
EI 30/15,5 printtransformator VB 2 VA Primair: Secundair: 2 VA VB 2,0/1/15 Block (part number 710564 - 89)

[CaptainSlow]

With the Remeha Tzerra and the Kiwi bought OTGW with esp8266 wifi to serial bridge the only value for that works without errors is VR=1. All the other values, especially the higher ones gave me all but error 03's....

Did you use a higher rated transformer and change out the 7805 for the Recom DC/DC converter? If not, that may be the reason. The parts needed, with Conrad.nl part number are:

RECOM R-78E5.0-0.5 DC/DC-converter, print 24 V/DC 5 V/DC 500 mA (part 157954 - 89)
EI 30/15,5 printtransformator VB 2 VA Primair: Secundair: 2 VA VB 2,0/1/15 Block (part number 710564 - 89)

THX... ...I was thinking about that already and I read the posts about it. Thought I'd give it a try with the one that came with the package. The transformer is hottish but not bloody hot I would say. I might need to change it to the heavier one and swapping the 7805 to DC/DC converter.
I don't get error messages yet and the connection seems stable. Had 2 drops in 2 days something like that but in the end I probably need to change it anyway

[Domotibart]

I have been using the opentherm gateway with usb connection for over a year with absolutely no issues.
Yesterday i wanted to change the USB connection to IP using a ESP8266. Everything went smooth but now i have the same issues that is mentioned by some other members.
I can connect to the esp with OTmonitor and read all data, but when i connect domoticz to the ESP8266 all i get is numbers;
2017-02-19 03:08:09.301 OTGW: BD0012B00

2017-02-19 03:08:09.302 OTGW: T101814A7

2017-02-19 03:08:09.302 OTGW: BD01814A7

2017-02-19 03:08:09.302 OTGW: T80190000

2017-02-19 03:08:10.305 OTGW: BC0192780

Anyone found a solution for this?

[rjblake]

I have been using the opentherm gateway with usb connection for over a year with absolutely no issues.
Yesterday i wanted to change the USB connection to IP using a ESP8266. Everything went smooth but now i have the same issues that is mentioned by some other members.
I can connect to the esp with OTmonitor and read all data, but when i connect domoticz to the ESP8266 all i get is numbers;
2017-02-19 03:08:09.301 OTGW: BD0012B00

2017-02-19 03:08:09.302 OTGW: T101814A7

2017-02-19 03:08:09.302 OTGW: BD01814A7

2017-02-19 03:08:09.302 OTGW: T80190000

2017-02-19 03:08:10.305 OTGW: BC0192780

Anyone found a solution for this?

Yup - you need to reset the OTGW, or issue a PS=1 command to the OTGW. Either short the two RST pins briefly or connect a momentary switch to them. If you have one of the ESP8266 GPIO's connected to the RST and are using ESP-Link, you can also reset remotely using the web front end

[DaWauZ]

Hello,

I trying to get a otgw on domoticz.
I have a otgw and added a ESP-12. The ESP-12 gets power from usb cable, and I connected the tx on rx and vice versa on the otgw.
When I add a OTGW LAN in domoticz, no sensors being added.
In the log files I says it is connected. (ip address + port 80)

I have set the ESP-12 with a ttl cable in STA mode, I can see on my router it has an IP-address,then I did this:

AT+CIPMUX=1
This initiates the server for a Webserver.
Next we start the server at HTTP port 80 using command ,
AT+CIPSERVER=1,80

I dont know exactly what to do now?

I did not do the ESP-LINK thing, is that neccesary? I thought, when the ESP got an IP, it can be connected to the OTGW.
Though when I have the ESP connected to my serial console and do a web request I also see that on the terminal.

[HFman]

I have the opentherm gateway also running with a ESP (ESP-01), but used ESP-link.
In your approach, did you set the esp at the right baudrate ?
Standard nowadays they are at 56700, or 115200, the gateway runs at 9600.

Otherwise.. make your life easy.. and flash ESP-link (works VERY stable ), other alternative could be ESP-easy, this one also has now a serial server, in this case you also could add temp sensor for the return pipe in case your CV does support this function in opentherm.

[DaWauZ]

I flashed now ESP link.
Can I connect the ground of the ESP and otgw together?

Verstuurd vanaf mijn XT1562 met Tapatalk

[HFman]

Uhm.. Reading this not sure how your setup is.
In my case, the power for the ESP is also comming from the OTGW.

So in my case fur sure the grounds have the same level.

Did you use a level converter between the OTGW and ESP ? (since the ESP is 3V3 and the OTGW is 5V) ?

May be share a picture of your setup, this say more then 1000 words .

And don't forget to set the ESP Link to 9600 baud otherwise it won't work..

[DaWauZ]

The ESP-12 is 5v powered, the board has an 5v to 3.3v onboard converter. So the ground of the external power connect as well to the ESP-12 and otgw.

Verstuurd vanaf mijn XT1562 met Tapatalk

[HFman]

you got this one :



To get it work grounds should be connected.. BUT... this can be only done with "good" power supply's.
Some cheap Aliexpress once the minus is connect to mains ground... (very dangerous.. !)

It is more safe, to use one power supply to feed the ESP and the OTGW...
If you use a normal power adapter, which you bought in the Netherlands, the risk something goes wrong is very small.

First try it without connecting the thermostat, your CV (boiler) is protected by the PC827 (optocouler).

[DaWauZ]

Tnx. The power supply is an charger for a battery builders lamp, and has an USB output. I'm using the USB output therefore, don't know how to check exactly how the ground is, will take a picture of it when I'm back in house Monday.

Verstuurd vanaf mijn XT1562 met Tapatalk

[DaWauZ]

till now it works good, connected grounds of otgw serial, ESP and external psu together
Now find a way to build everyhing in one box.
A worker mate has printed some holders for the prints, will show some pics this weekend or monday.

[HFman]

Great ! The "print" part I still need to do. Curious how you solved it.

[DaWauZ]

well, due to a power outage, the kettle and otgw shutted down unexpectly.

something is going wrong. First I dont get any data to my sensors in domoticz so after solved the power outage, I deleted the hardware / sensors in domoticz.
Trying to add is again, yes new sensors allowed, but no new sensors created.
I viewed with opentherm monitor and see that under misceleneous that state is unknowd, (monitor or gateway setting)

And this message is coming every time:

Code: Select all

Unk-DataId	Message ID 99: 0

after adding new hardware In domoticz I can see

Code: Select all

2017-03-11 20:17:07.419 OTGW: T10010600
2017-03-11 20:17:07.419 OTGW: BD0010600
2017-03-11 20:17:08.420 OTGW: T00110000
2017-03-11 20:17:08.420 OTGW: BC0110000
2017-03-11 20:17:09.420 OTGW: T80190000
2017-03-11 20:17:09.420 OTGW: BC01929EB
2017-03-11 20:17:10.421 OTGW: T00090000
2017-03-11 20:17:10.421 OTGW: R801C0000
2017-03-11 20:17:10.421 OTGW: B401C298F
2017-03-11 20:17:10.421 OTGW: AC0090000
2017-03-11 20:17:11.421 OTGW: T00630000
2017-03-11 20:17:11.421 OTGW: R801C0000
2017-03-11 20:17:11.421 OTGW: B401C298C
2017-03-11 20:17:11.422 OTGW: AF0630000
2017-03-11 20:17:12.422 OTGW: T900E6400

en nog wat output uit opentrhem monitor.

Code: Select all

0:11:04.341340	AF0630000	Unk-DataId	Message ID 99: 0
20:11:05.214584	T9018147D	Write-Data	Room temperature: 20.49
20:11:05.317252	B5018147D	Write-Ack 	Room temperature: 20.49
20:11:06.216670	T80000200	Read-Data 	Status: 00000010 00000000
		   - CH enable: disabled (0)
		   - DHW enable: enabled (1)
		   - Cooling enable: disabled (0)
		   - OTC active: not active (0)
		   - CH2 enable: disabled (0)
		   - Summer/winter mode: winter (0)
		   - DHW blocking: unblocked (0)
20:11:06.346376	B40000200	Read-Ack  	Status: 00000010 00000000
		   - Fault indication: no fault (0)
		   - CH mode: not active (0)
		   - DHW mode: not active (0)
		   - Flame status: flame off (0)
		   - Cooling status: not active (0)
		   - CH2 mode: not active (0)
		   - Diagnostic indication: no diagnostics (0)
		   - Electricity production: not active (0)
20:11:07.218278	T10010600	Write-Data	Control setpoint: 6.00
20:11:07.316676	BD0010600	Write-Ack 	Control setpoint: 6.00
20:11:08.219816	T00110000	Read-Data 	Relative modulation level: 0.00
20:11:08.315542	BC0110000	Read-Ack  	Relative modulation level: 0.00
20:11:09.223508	T80190000	Read-Data 	Boiler water temperature: 0.00
20:11:09.315700	BC0192B80	Read-Ack  	Boiler water temperature: 43.50
20:11:11.239305	T00630000	Read-Data 	Message ID 99: 0
20:11:11.250618	R801C0000	Read-Data 	Return water temperature: 0.00
20:11:11.333849	B401C298C	Read-Ack  	Return water temperature: 41.55
20:11:11.345722	AF0630000	Unk-DataId	Message ID 99: 0
20:11:12.231534	T806E0000	Read-Data 	Message ID 110: 0
20:11:12.324270	B706E0000	Unk-DataId	Message ID 110: 0
20:11:13.234776	T80000200	Read-Data 	Status: 00000010 00000000
		   - CH enable: disabled (0)
		   - DHW enable: enabled (1)
		   - Cooling enable: disabled (0)
		   - OTC active: not active (0)
		   - CH2 enable: disabled (0)
		   - Summer/winter mode: winter (0)
		   - DHW blocking: unblocked (0)
20:11:13.454531	B40000200	Read-Ack  	Status: 00000010 00000000
		   - Fault indication: no fault (0)
		   - CH mode: not active (0)
		   - DHW mode: not active (0)
		   - Flame status: flame off (0)
		   - Cooling status: not active (0)
		   - CH2 mode: not active (0)
		   - Diagnostic indication: no diagnostics (0)
		   - Electricity production: not active (0)
20:11:14.237107	T10010600	Write-Data	Control setpoint: 6.00
20:11:14.329106	BD0010600	Write-Ack 	Control setpoint: 6.00
20:11:15.239988	T00110000	Read-Data 	Relative modulation level: 0.00
20:11:15.331553	BC0110000	Read-Ack  	Relative modulation level: 0.00
20:11:16.246319	T80190000	Read-Data 	Boiler water temperature: 0.00
20:11:16.336178	B40192B7D	Read-Ack  	Boiler water temperature: 43.49
20:11:17.257618	T00090000	Read-Data 	Remote override room setpoint: 0.00
20:11:17.269511	R801C0000	Read-Data 	Return water temperature: 0.00
20:11:17.433227	B401C298C	Read-Ack  	Return water temperature: 41.55
20:11:17.444998	AC0090000	Read-Ack  	Remote override room setpoint: 0.00
20:11:18.262613	T00630000	Read-Data 	Message ID 99: 0
20:11:18.274251	R801C0000	Read-Data 	Return water temperature: 0.00
20:11:18.431985	B401C298C	Read-Ack  	Return water temperature: 41.55
20:11:18.444086	AF0630000	Unk-DataId	Message ID 99: 0

whats going wrong?

[HFman]

Send the command PS=1 to the otgw, you can do this under the hardware tab of domoticz. If you can't figure out, will send you a screen shot tomorrow.

[DaWauZ]

Nothing special happens. Also tried PR=A but no logical data send back

[HFman]

Ok, somethimes have same issue, if you press the reset uC in the ESP-Link screen (see the yellow picture i send you before) and then try to send to command again, it will work again.

[DaWauZ]

I think i figured out, problem with loose wire tx or ground, bloody Chinese manufacturers of gpio wires.
I had the otgw disconnected, checked the wires and put it on, then it would react again on the commands.
Tomorrow I will solder them.

Verstuurd vanaf mijn XT1562 met Tapatalk

[HFman]

Happy it works again, but quite sure it was not the rootcause.
The "mode" your OTGW was in, is the mode it send message by it self (PS=0), which is used by the OTGW software.
For Domoticz you need the " reqeusted " mode (PS=1).

I have the same issue after power down, reseting the esplink and then type PS=1 does normally the job.
Other options is resetting the OTGW at the pcb it self (jumper).

Anyhow good that it runs again !