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Would it be possible to add a value to the PS=1 report which indicates if a Room Setpoint Overrule is active ? I am developing a thermostat which uses values from the PS=1 report. This thermostat needs to 'know' if the room setpoint is overruled or not for showing the appropriate controls. Thermosta...

Your answer couldn't be more clear, and I agree it is best not to show a value for DHW setpoint.

I guess I have to replace the boiler, select a brand which uses opentherm natively

Andre_OT: thank you for calling the support line, I hope they can tell you what is supported and what is not. hvxl, I think my test has made some things a little more clear: I cannot find any way of changing the DHW or CH setpoints in the thermostat, these values are only shown and cannot be edited....

Yes, the CH setpoint is reported correctly on the OTGW, only the DHW setpoint is not. When I use firmware 3 it works as it should. As I have some time to test this now, I will change both knobs to an unusual setting, and check the setting on the thermostat. I use this thermostat: Honeywell Chronothe...

Yes my nefit boiler has turn-knobs for the two settings.
I don't want to overrule these two setpoints, I just want them to display correctly through the OTGW on my tablet-thermostat

Thank you for your answer, sorry for not responding, i am wiling to help improve the gateway firmware and have already sent the logfile to you. The gateway starts the DHW setpoint at 80, and after some time the DHW setpoint is changed to 60 as configured on the first boiler knob, and the Max CH wate...

My (new) EMS-OT converter seems to support this. I can turn a knob on the boiler to select DHW setpoint. When i change the knob and view the settings in the thermostat later, then the thermostat knows the actual setting of this DHW setpoint knob on the boiler. Same goes for the max CH setpoint knob ...

Testing the 4.0b4 firmware, i still don't get DHW setpoint in PS=1 reports, while in firmware 3 this worked OK. Using Nefit boiler with opentherm converter. 00:04:50.105120 T80383C00 Read-Data DHW setpoint: 60.00 00:04:50.197003 B70383C00 Unk-DataId DHW setpoint: 60.00 00:04:50.212662 A40385000 Read...

Started using 4.0b3 firmware and noticed the DHW SetPoint is always 0, while firmware 3.4 reported the correct DHW SetPoint.

Using:
Honeywell Chronotherm Vision Modulation
EMS-OT converter
Nefit Smartline HRC24/CW4