How to use GPIB card to control relay on and off

[yankess]

Hi :

      I have a NI GPIB card and I want to control relay on/off by GPIB card, if anyone know how to control relay by GPIB card please tell me how to do?

[Albert.Geven]

That is perfectly possible when your relay has a gpib interface connector and a manual that describes the commands to be issued.
But maybe you have the feeling that gpib is just a parallell IO port, I'm sure it is a bit more.

[Ebele_Obijiofor]

Hello,

See the tutorial here for some information on connecting your instrument and doing some initial communication with it. Hope this helps.

Regards,

[yankess]

I just use general relay and coil voltage is +12V, I want to use LabVIEW to control relay on/off by GPIB cable(I already had NI PCI-GPIB card), my relay no have GPIB interface could anyone tell me how to control by LabVIEW directly?

Thank you for your reply!

[Albert.Geven]

The GPIB bus is a communication bus. You can connect it to instruments that  have a GPIB bus port.
You better can use the handshake lines of your serial or parallel port. These are easier to program a stable signal to a relay driver.
The serial  CTS already has +12 Volt (and -12) so maybe  that is a better choice.