LabVIEW
Old serial vi works but serial example using VISA has to have error handleing removed
Old serial vi works but "Basic Serial Write and Read ", example using VISA has to have error handleing removed "write Bytes to port"or throws:
Error -1073807298 occurred at VISA Write in Basic Serial Write and Read.vi, VISA: (Hex 0xBFFF003E) Could not perform operation because of I/O error.
I read through some of the threads and tried removing and adding the drivers and this did not fix the issue.
Any suggestions would be appriciated, I'm using LV8.6.
Regards,
-SS
@mikeporter wrote:
Just a guess, but are you trying to talk to a port that is bring used by something else? Does it behave the same way on all serial ports?
No the ports are freed up and yes it behaves the same way on both ports.
They are virtual USB to UART ports. -SS
@mikeporter wrote:
Does your computer have any built-in serial IO? Do the drivers work with them? Can you access the serial dongles from other programs like hyperterminal? What OS are you using? Who makes the dongles that you are using?
Mike...
Yes, one built in serial I/O. No, since I am using a USB connection for my hardware that is required. Yes, Tera Term and Hyperterminal work. The OS is Windows 7 (officially not suported I think). USB drivers are made by Siliconlabs.
I will install LV(latest) on a 30 eval and see if it has the same issue.
I know VISA works fine on other hardware, I'm just trying to make sure I don't have a hardware problem lurking under the hood of my driver.
How do you determine at runtime which VISA driver is being used? I would like to know which VISA driver the "VISA Write Function" is using the LV8.6 version or the LV2012 version.
