Use it the same way you would talk to a 232 port. It doesn't matter to LabVIEW what type of serial port you're using. You can use the serial functions or the VISA functions. For the serial functions, the port number is one less than the com port number. For VISA, you pass the function ASRL1 for com 1, ASRL5 for com 5, etc. The actual communication is handled by the driver and unseen by the user.
"Ladislav CZAP" wrote: >Can someone give me a hint how to deal with RS422/485 interface from>Labview?>>Thanks>Ladislav Czap>>