How to send a single code of hexa from 1 byte with sending VISA for every 500 ms?

Hello

I would like to send only a 1-byte hex code in LabVIEW to an external device using RS - 232 (300 bps, 8 data bits, no parity bit, no flow control) every 500 ms.

The TX pin on the computer should stay at the logical level 1 once he finished transmitting the 1 byte of data and wait before transmitting again 500 ms.

I'm building a test below code:

The output of "Channel 1" will connect in the sending VISA write buffer. (Please note that the code above does not include the 500 ms delay I mentioned. Just ignore for a moment.)

This code will work like what I described above? I tried on my project, but I was getting weird things on the device.

Convert the code hex correctly?

And how to send it VISA pass in the string? Does include the other 'useless' strings with the hex code that I want to send?

Any help will be appreciated.

Thank you.

Hi eddiechai...

you will get a string of length 2, so you have 2 bytes. You must use the U8 and the cast function type. (see attached photo). You have to disable the stop character to get what you want.

Mike

Tags: NI Software

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