I'm trying to write to LPT 1 using the out port.vi on windows XP but for some reason it isn't recognising the port. I have tried using the serial port.vi and it comes up with error 37. I have downloaded the HWaccess out port/in port.vi's from the ni website and this still does not work. I am using the LabVIEW basic 6.1.
Please if someone can help.