Hi, all
we have a photometer, which is connected to PC by USB.
however, when you do remotecontrol, it actaully opens a vitural COM
port, for example COM4. then you could send ASCII (text) command in
HyperTerminal. To do this, you have to install some drivers coming with
the instrument. however, now we want to control this meter by Labview .
I tried to send the same ASCII command from "VLSI write" through COM
port 4( I do close the HyperTerminal when I use Labivew). but there is
no response. I don't know what I am missing. I guess if I
need to write a driver first or there is some special opertation
for this kind of instruemnts.
the weird thing is that once you tried to communicate with the
instrument by Labview, you won't be able to communicte with it by
HyperTerminal any more, even after you closed Labview. seems the COM
port is freezed.
thanks,
tz
