visa

[vaishnavinatarajan]

I dont get any errors during serial read/write operation but I am not getting the data output when the data is read. Can anybody help me out?

[Lewis_G · Accepted solution]

What device do you have? What message are you sending? What message are you expecting?

Are you reading any "Bytes at Port"?

If not, I would make sure that the port is configured correctly (baud rate etc) and check the wiring (using correct cable). The Rx of the serial port must connect to Tx of the device.

[joaopam]

Follow Lewis' answer. And also, for testing purposes, use a hyperterminal client, such as Realterm.

Regards.

[Ranjeet_Singh]

Post your VI with what you are doing. It will be easy to debug.2011 compatible 

[vaishnavinatarajan]

I have actually solved the problem and i was trying to transfer data from one VI to another VI in the same PC.By connecting the Tx and Rx pins of the COM port I was able to recieve the data. Thanx for providing me different solutions.. !! in another program ,while transferring data from one PC to another PC I am getting time out error even after including a delay in my serial read VI. How to over come the error?

[Ranjeet_Singh]

Which labview version you are using ?

[Ranjeet_Singh]

I have uploaded same code with some modification. Timeout is 10 sec run it and let me know. It should work.

[Ranjeet_Singh]

for both the VI timeout is 10 sec. First run the read VI and within 10 sec write onto serial port

[vaishnavinatarajan]

can u send the same program in lab view version 8.6??

[Ranjeet_Singh]

HI here it is