No more waiting until data synchronize or wondering where the data went.
Like this ?
With just a few minutes of your time, a few easy steps and and only 108 configuration lines in just 2 .json files !
You can find my project on Github : https://github.com/RneeJ/Domoticz-Marstek
More is easy possible, even controlling the device, also for other modbus devices, having a rs485 port, that store data in registers.
(you need the manual for these register#)
With only the use of the PUSER-DR134 (a € 15 device) and MqttMapper plugin (by Flyingdomotic) you can bypass programming, api's etc.
Thanx to Waltervl (who told me to report here) and Flyingdomotic for helping !