Error -1073807202

[dougonlabview]

I am trying to write a command to an external instrument via a com1 port and even using a very simple circuit (using a VISA write block, VISA resource name is I/O COM1, and the command to the instrument in Write Buffer. Nothing is wired to the error code input. )  I get the following error message:

Error -1073807202 occurred at VISA Write in doug experiment.vi

This error code is undefined. No one has provided a description for this code, or you might have wired a number that is not an error code to the error code input.

Any ideas on how to get this to work/ what I am doing wrong, would be greatly appreciated.

Cheers

[pincpanter]

A very very common reason: VISA is not installed.
VISA doesn't get installed together with LabView, it must be actively installed from the Drivers CDs.
You may verify if VISA is installed by using Measurement & Automation Explorer, Software folder.

[TCPlomp]

Hi Doug,

have you noticed that before you asked a question you were forced to do a search?
Have you done that?
because if I enter your error code (without the (-)) I get 136 results
With 3 in the last week (is this some school assignment)
The most recent answer is here

Ton