USB-232 IO Resource

[MYWONG]

Hi,

Does anyone know can i access the IO resource of a USB->232 device.

For the normal RS232 (say Com1), i can access the IO resource (03F8-03FF) and use the out port.vi to write a 8 bit data to the data line. How can i do it for the

USB->232 converter?

Please help...

MY

[Dennis_Knutson]

I don't believe you can use the port i/o with a USB-RS233 converter. Why would you want to use that instead of a simple VISA Write/Read?

[MYWONG]

Cos i am going to output a 8bit data (e.g. 11010011) instead of ASCII code

[Dennis_Knutson]

You can do that with a VISA write just as well as with the port I/O. You have a couple ofl ways. With a U8 array, use the Byte Array to String function, with a string string control/constant for Hex Display, or with a U8 scalar, use the typecast function.

Message Edited by Dennis Knutson on 09-28-2007 04:56 AM