WebSep 14, 2012 · Serial devices can be quite slow, so you have probably flushed the buffers long before the device sends back its response (including the echoed command). Since … WebAug 2, 2024 · VISA Read for serial will return a number of bytes from the serial port buffer to your program. However, the amount of data that it returns depends on 3 important details about your settings and your serial data: your termination character, the amount of data requested, and the timeout period.

Increasing the Rx Buffer of a Teensy3.2 [ Solved #14]

WebMay 6, 2024 · Of course this code is rather crude, but it shows how to open the COM port using the VISA function, ready bytes in the buffer, display them, and then close the VISA Port. *The false case is empty, false means nothing is in the serial buffer, so do nothing. As a side note, I learned this morning that within LabView, attaching “/n” to the end ... ryan\u0027s world is terrible

How to send data to arduino via labview : r/LabVIEW - Reddit

WebDec 19, 2013 · 1 Answer Sorted by: 3 You could poll the serial port and if the number of bytes exceeds a threashold (I used samples of 4 bytes), read that data and generate a user event. In another thread you could handle the events like normal events: Share Improve this answer Follow answered Dec 20, 2013 at 1:51 Ton Plomp 3,020 1 18 35 WebMay 20, 2014 · 1) You have to buffer your received data. So use the Read VISA.VI in a while loop with a shift registrer. So you will get for every reading a new entry in your array, if you will use the Build Array.VI for each reding. WebOct 19, 2024 · So, in LabVIEW I first sent. SYST:REM\n. then I sent. MEAS:VOLT:DC? 10,0.003\n. over my VISA port. When I read back the buffer I got the voltage as desired as a text string. Note that the \n is the LabVIEW "Linefeed" string constant, I concatenated that to the end of the main part of the string using the concatenate string block. ryan\u0027s world lava