Hi,
Some time ago, i bought the opentherm to modbus gateway.
I've connected it and basic communication to the gateway seems OK.
My project started longer ago, else i'd probably choosen Neuron. I'm running fhem on RPI. So, the only thing i have at and is the manual of the opentherm gateway.
Before going to the next step of actually connecting the boiler, i'm wondering if anybody has experience with opentherm gateway projects? (Assuming i'm not the only one buying it...) Any suggestions/feedback, esp.

• what is the best way to detect that the boiler and the thermostat are online
• does it make sense to switch the gateway between monitor and active mode (e.g. in normal condition, i rely on the thermostat, but in case the regular scedule needs to be overruled, i switch to active mode (with the thermostat still connected)
• Experience in steering opentherm boilers, do's and dont's...
• Neuron/Neuron software has a higher level interface where i could integrate simply and just set measured and expected temperatures? (Can always consider to switch to Neuron, after all including heating control is a rather advanced application)

Thanks,
Pieter