Hello Molly, There are a few things that could be going on here. What method are you using to communicate between your VI's? I will assume you are using serial.
If a port is not open, the port will discard the message, which could be what is happening here. If you are trying to write from computer A to B and then have B respond back to A, your code should look like this: Computer A: Open VISA serial port. Wait until computer B has the program running and has opened its VISA port (there is no programmatic way to do this, you will need to synchronize this by hand). Send request. Read response. Close port. Computer B: Open VISA serial port. Read request. Send response. Close port. Hope this helps. If you need more assistance, feel free to post here. Scott B. Applications Engineer National Instruments
