Okey, mysql can work, good : But MSSQL ?
But to get all write-to-bus-message we need a handle-func?
I have test with:
if not client then
  require('genohm-scada.eibdgm')
  objects = grp.all()
  datatypes = {}
  for _, object in ipairs(objects) do
    datatypes[ object.id ] = object.datatype
  end
  function writehandler(event)
    log('FUNC:' .. event)
    local dpt = datatypes[ event.dstraw ]
    if dpt then
      local value = knxdatatype.decode(event.datahex, dpt)
    end
  end
  function readhandler(event)
    log('FUNC:' .. event)
  end
  client = eibdgm:new({ timeout = 1 })
  client

ethandler('groupwrite', writehandler)
  client

ethandler('groupresponse', writehandler)
  client

ethandler('groupread', readhandler)
end
-- handle knx
client

tep()
But it will not work ..
When I, from ETS, use write to, my handler cant feel it..