Interesting topic. It is good to read that Domoticz is still popular for different kind of users. For myself, I am an electronics guy, but I did in the past also embedded programming. For me the combination of DzVents scripts and EspEasy (including their rules system) makes a very flexible home ...

Good to see that it is possible to control the Marstek using the DR134 from Domoticz. For me it is not needed now because I use an EspEasy module for this. But for other people this sounds like an easy sollution.

I do not completely understand what you want to know but probably the following code part helps you:


local jsonString = domoticz.variables('StroomprijsVandaag').value

if hourNow >= cyclus2Tot then -- gebruik vanaf 22 uur de StroomprijsMorgen informatie
jsonString = domoticz.variables ...

How do the user variables look like? Is it something like this: Or is your StroomprijsMorgen empty?

To collect the 15 min prices via Enever I made a DzVents script to place this info in a user variable. This information I use to control a home battery to charge at the cheapest 11 kwarters of a day and discharge at the most expensive kwarters a day.

The EneverGet DzVents script can be used by ...

Domoticz support for quarterly prices is a functionallity that I would like a lot. Now I use the hourly prices to determine charging my PIH and home battery. But with quarterly prices this will be much more accurate.

Can you please post de DR134.json and the mqttmapper.json you used ?


See the attachment. DR134 (1).zip
Do not forget to change in the Domoticz Devices 'MQTT mapper - MTCE' and 'MQTT mapper - MTDE' the divider into 100 to get these values in kWh with two decimals.

Furthermore I changed the ...

I have used the DR134 to readout the registers as RNEE described in this topic. Thanks for sharing this.
I made some changes in the MqttMapper.json file to add CellVoltage and CellPower.
Using the DR134 to send Modbus registers to the Marstek seems not possible.

DR134 velden.png

For sending ...

I am using the DR134 to read out data from the Marstek Venus V2 battery as RNEE describes. This works fine with the Light edge mode of this modbus gateway. Also adding aditional register readout like battery voltage and back up relay status is no problem.

My goal is to use the DR134 to change the ...

Thanks for the info. This helps me to get started in sending commands to the Mastek.
First wait on de delivery next week.

This looks good. I have already the DR134 and the Marstek V2 is ordered. '
It seems to me that this Modbus sollution reads the status and data of the Marstek.
Is there an example how to control the Marstek using Domoticz and the DR134?