Problems to write on a serial port via VISA Write

[BMayr]

Hello,

If i want to write a message to the serial port via VISA Write this error message occurs " -1073807298". I have initialised the port, open it and set the buffer size. But if i use the instrument I/O assistant, open the edit VISA resource, in there open visa session and set the buffer, e.g. on 1000, i can send messages and receive also something.

Could someone please tell me, how i can solve this problem?

Thanks. Regards, BMayr

[K C]

Hi BMayr,

I had a similar problem with a COM port at USB. The use of the buffer function solved the problem (in Labview)

Message Edited by K C on 03-02-2007 08:14 AM

[BMayr]

Thx K C for your post. I found my failure. I have initialized only the input buffer and not the output. 🙂 So after this it works fine.