VISA error

[IBAHKA]

Hello,
I connected the Polhemus Fastrak to my LabVIEW driver and am having difficulties reading the data. The problem lies in the VISA Configure node. This is the message get:
Error -1073807330 occurred at Property Node (arg 3) in VISA Configure Serial Port (Instr).vi->Polhemus Driver.vi

Possible reason(s):

VISA: (Hex 0xBFFF001E) The specified state of the attribute is not valid, or is not supported as defined by the resource.

I would appreciate any input!
Thanks!
Ivanka

[Dennis_Knutson]

What are you setting the serial port to? I'm not sure if the parameter numbers is zero based or not. It's either data bits or stop bits. Set a breakpoint at the VI, step into it, and probe the actual values being passed to the property node inside VISA Configure Serial Port.

[IBAHKA]

Hi Dennis. I have been able to communicate with the serial port aqnd collect data. Depending on the Baud rate, I read either full or not full strings, or sometimes no string at all. But in all instances the strings flow in only for a few seconds (10 at most). This is not adequate for our uses. When I run the device and collect data in Hyperterminal I can collect data for much longer.
I would appreciate any ideas!
Thanks,
Ivanka

ps- I am forwarding you my program. I was hoping you could look at it and tell me whether the VISA writes I have placed everywhere will cause a problem, since the reference and error wires do not leave the write terminals. When you open the program, please look at the Configure Polhemus Sensors case in the larger ca
se structure. Within that tab, please look at the case structure. There you will see my extensive use of VISA writes.

Again, thank you very much for your continuous help- it is much appreciated!