GPIB OR RS232 -Keithley driver vi

[poli]

We have a keithley 2000 meter connected to a computer which has labview 5.1 at a port called "RS 232" .The keithley device can work in GPIB 488 as well as  RS 232 modes. However there is a vi called K2000 Initialize.vi , where under "Instr Descriptor" it says  "GPIB 0 ::22".  I am confused whether we are using RS232 serial communication or is it GPIB? The connection is physically made at  RS 232 port but the VI instr descriptor is GPIB ?

[tflink]

Hello,
In the Instr descriptor you should enter the COM port you have connected the instrument to. For example COM1::INSTR or ASRL1::INSTR.
Try that and let me know if you succeed.
BRThomas

[Can W]

I would make sure that the intialize VI that you are using is made to initialize the serial ports. Usually when communicating via RS232 you have to set up certain information such as the Baud Rate, Stop Bits, Parity, etc etc. The Initialize vi that you are using may be for GPIB only, you should be able to double click on it and check to see what is behind the scenes. If it is indeed for both, than you should have the options to select either COM# for the serial portion or GPIB#::## Hope this helps