Hi Whuili, >From your block diagram, go to your Functions Palette. Within that, look under Instrument IO.
First go to VISA, then VISA Advanced. Place a VISA Open on your block diagram. Go back to Instrument IO, but this tiome go into Serial. In there you will find the vi's to configure the serial port, read, write and close the port. Of course, open the serial port first by placing a VISA Resource Name Constant to the OPEN VISA vi. This is where you select which COMx port you want for which instrument. You should be able to see all 8 ports if they were previously setup (from Windows). I forgot to ask which version of LV you are using. I am using LV7, so there may be a few differences to my instructions, as I don;t remember the exact placement of the VISA-Serial vi's in the previous versions.... I think they should be relatively the same.. ;o) Hope this helps.. JLV
