Using LV RT 7.0, cannot access the serial port. Recieve an error -1073807343 trying to access the serial port. I have visa 2.6.0 installed. I am using visa read and write, set to com1. This same computer works with LV RT 6.0.2.
With LV RT 7.0 or greater, you need NI-VISA 3.0.1 or greater and NI-Serial 2.5 or greater. The latest version of NI-VISA for RT is 3.2 and I believe the latest version of NI-Serial for RT is 2.5.3.