Ok,, i tried something and success,,, the USB to RS485, of the 2nd unit must be bad, because i just had the idea to use the one from 1st unit on the 2nd unit, just to see what happens.. I successfully programmed the 2nd unit... And i am able to see info in the monitoring.. .but i cant figure out why I couldn't see monitoring in the 1st unit a while ago.. Hmmm