From Friday, January 17th 11 PM CDT (January 18th 5 AM UTC) through Saturday, January 18th 11:30 AM CDT (January 18th 5:30 PM UTC), ni.com will undergo system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

Instrument Control (GPIB, Serial, VISA, IVI)

cancel
Showing results for 
Search instead for 
Did you mean: 

NI-VISA Send null instead of treating it as end of string on serial port?

I have an probe that communicates on a serial port and I am trying to communicate with it from Excel VBA using NI-VISA. I have basic communication functioning, but the problem is that the manufacturer of the probe uses the worst possible commands and at the moment this is the one I have problems with.

 

“#00”+Chr(126)+”C”+Chr(1)+Chr(0) +“*”

 

The problem here is Chr(0), it seems as NI-VISA treats null as end of string and does not send the null and not * that comes after. Anyone that knows a way to send the null on serial port using NI-VISA and not treat it as an end of string?

0 Kudos
Message 1 of 1
(164 Views)