missing bytes in Visa read function

[SyedAhmad]

I am using vise read to read the specified number of bytes but before reading I checked bytes at port and compare if its greater than the specific value than I go ahead and try to read that much bytes sometimes I receive the specified number of bytes but sometimes not, even the bytes at port shows me the data is available but read function won't be able to read that much number of bytes. Thanks in Advance for your help. Regards Syed Ahmad

[Dennis_Knutson]

From earlier today.

If the serial data has the termination character in it, you must disable the detection of it with the VISA Configure Serial Port. 

[SyedAhmad · Accepted solution]

Thanks a lot, it works. I just disabled the termination character from visa configure.

Also, how fast i can go as I am using 230400 baud rate and receiving a (20 frames of 350 bytes each in a second). Also i want to display these frames in a intensity graph. Is it possible that i can achieve this in lab view.

Regards  

[Dennis_Knutson]

I would think that you can at that baud rate but it would also depend on what type of data manipulation you do and other tasks running.

p.s. Instead of marking your thank you as the solution, you might want to mark my answer. You can change the marked solution by clicking on 'Options' above the message body.

[SyedAhmad]

I marked your answer as a solution of my question. I will try tomorrow how fast I can go.

Regards

Syed Ahmad

[xjyvonne@wpi.edu]

Hi, now I have used the VISA read to get some data from my device, I have detected the intended bytes to read and also the actual bytes being written, which is really different.

I also disabled the detection of terminal of serial port, which all seems useless.

Thanks!

[xjyvonne@wpi.edu]

I think I have the same problem with the host, but can not solve it now.