Serial Port: Device is communicating well with VISA-IC but not with VI...

[Brij]

Hi all!

I am trying to communicate with a device(Power Meter: ML2438A) using RS 232 serial port...

When I send a command using VISA-IC it worked fine.. but when I send the same command using a VI (Basic_serial_write_&_read.vi), it did nothing..don't even throw an error...   when I tried to read data it has thrown time out error.

I tried loopback test on the same VI it worked well..

Now the problem is Device is communicating well with VISA-IC but not with VI..

I am attaching NI-Spy results and specified VI.. Plz help me out

TIA

Bye

Brij.

[acalmeyn]

I didn't look at your vi so i don't know if you did this already but it has gotten me before. Did you set up the serial port baud rate, stop bits.... a loop back test will not show this problem it will make it look like everything is set up ok.

[Brij]

Settings are not the problem I checked them many times....

[Brij]

Hi all!

 Plz help me out .. I am struggling with the same problem since a week.....

 Problem is Device is communicating well with VISA-IC but not with Visa VI...

 There is no problem in parameters (Baud rate, parity....) setting. I have checked it many times.

 While debugging I have seen that just after write, the Nos. of byte at serial port is  ZERO .What does it mean??

Plz Help me out.. I am attaching the VI also.

Thanks for help.

Bye

Brij.

[Dennis_Knutson]

I think you're sending the characters "\" and "n" and not the control character. Make sure you have '\' Code Display turned on.

[Brij]

Thanks to everybody... Now I am getting what I wanted..

Bye

Brij