Thanks. I have another problem. When I used the GPIB Read in order to receive data from the KL4200, the gpib read generated an error which error code is 0.
However, it is OK to use GPIB Write to input the command to the KL4200.
I don't know why the GPIB write have no problem but GPIB read have problem.
Attached is the 2 VIs.
Thanks again for your help.
