Solution
There is no interfacing support provided by TeraTerm software, which could be used to interface TeraTerm with LabVIEW. An alternative is to use
system-exec node and pass the TeraTerm exe address to it.
If you need help learning how to use system-exec node, you can refer
this link.
You can also write a batch file which can include commands you want to send to TeraTerm and then execute the batch file using
system-exec node.