Hello, I have a question about clearing RS232 lines. I am using a RS232 serial switch in an automated test setup to switch between transmitter units under test. The switch will set the RS232 line to units 1-20 then send data to each unit to command transmissions, readback FW settings etc. I made a VI to run the switch, and I am using a different VI to run the communication to the transmitter. My problem occurs after I run my VI to the transmitter. Once this VI is run, I can no longer use the RS232 line for anything other than this VI. I tried using VISA clears, and Re-initialize all to default approaches into the start of other VIs, but nothing works. I do not have a lot of knowledge about serial communication to begin with, so right now I am stumped about how to "clear the line".