05-14-2019 08:19 AM
@mhd.gar 已寫:
Hi
I have similar problem . I am using Advanced serial write and Read example and I want to change some of those initializations .I have software that it shows what the original program is sending .Due to those commands i want to change followings :
1- XonLimit and XoffLimit (in original program it has been set to 2048 and 512 resp. but in LabVIEW i cann't set these values .
2- I want to set DTR and RTS off
3- set these ReadInterval=500, ReadTotalTimeoutMultiplier=2000, ReadTotalTimeoutConstant=0, WriteTotalTimeoutMultiplier=0, WriteTotalTimeoutConstant=0
4- In/out queue size 1000/1000
Many thanks if anybody help me .
HI, ME TOO
I have the same problem
01-11-2023 06:14 AM
Hi, I'm having the same problem and need to set the xonlimit and xofflimit. I looked through the examples but can't find anything where these parameters are set. Can you elaborate a bit or maybe give a screenshot or these properties ?
01-12-2023 10:31 PM
Do you really need control over the XON/XOFF limits?
If you need more control over the serial port settings: Refer to
This thread is about the DTR line, but the library has a VI for the XON/XOFF limits. This is much more complicated because this VI "comm control.vi" was primary made for full control over all possible flow control options. VISA has three settings for XON/XOFF (enable/disable, XON character, XOFF character), while this VI gives you control over all 7 settings for XON/XOFF mode and you have to set them all correctly.