LM5 DW1 4bit with KNX Sensor

[pepe]

Hello everyone

I would like to dim the light using a KNX button (4-bit datapoint).
In the dali tab, i can link this object for the lamp, the dimming works well for one lamp, but as soon as more than 5 lamps with the same data type are controlled, the lamps dim differently and with a delay.

does anyone know a script to control the dali group with 4bit datapoint?
like that:

daligroup=0
if (grp.getvalue('10/0/3') > 1) then
require('user.dali')
dalicmd('internal', 'arc', { addrtype = 'group', address = daligroup, value = (grp.getvalue('10/0/3')*2.54) })
  else
  require('user.dali')
dalicmd('internal', 'arc', { addrtype = 'group', address = daligroup, value = 0 })
end


thx

used firmware: LM5 Lite+Ext (i.MX6)
produkt: LM5 DW1