Using Serial Port for Non-Serial Data Acquisiton

I searched the forums and couldn't find anything related to this topic.
I saw that it was possible to use the parallel port for simple digital I/O and I was hoping the serial port can be configured the same. It seems all the VISA VI's only want to use the serial port to recieve ASCII chars at a given baud rate, but is it possible to simply poll the status of the serial line at my own speed to see if it is high or low, kind of like a single pin DAQ?
It seems it would be possible as long as the serial data is read and controlled by labview and not by Windows. Let me know if you have any ideas how to approach this problem, or any feedback as to why it is not possible.
Thanks everyone!
Solved!
Go to Solution.

Select Property>Serial Settings>Modem Line Settings. For example, the CTS State is an input to the pc.
Using these lines is a very poor replacement for a scope or DAQ board. The only things you can get back is Asserted, Unasserted, or Unknown. The range of acceptable signals is quite large. Anything between +3 and -3 is an unknown state. Your other signals are +/3 to 15 volts. what kind of signals do you actually want to capture?
edit: There is no such thing as VISA Status so I have no idea what you are actually using.
Message Edited by Dennis Knutson on 07-20-2009 11:09 AM

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