Use vzlogger datas with OpenHab2


now my OpenHab and my Volkszähler (with vzlogger) runs.

I read I can get the datas from the vzlogger with the MQTT Binding into OpenHab.

I want to display different types of power meters in one diagramm:
S0 power meter from th house connected with the vzlogger
different fibaro wall plug power meter

How can I send these datas from vzlogger to OpenHab?