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From: Shun on 6 May 2008 13:10
Hello, Is there an existing Relay Control I can use in LabView? I simply need the path "to be connected" when somewhere I receive a TRUE and "to be disconnected" when "FALSE" is received. Thanks!Allen
From: Beaton on 6 May 2008 13:40
Would a case structure work? or maybe a simple select, which would be found under comparison.
From: smercurio_fc on 6 May 2008 14:10
What "path" are you referring to? Are you talking about a wire? You can't connect/disconnect a wire that way. What are you trying to do?
From: JoeLabView on 6 May 2008 16:40
Sounds like you are trying to control a relay from labview.
If so, the answer is no.. there's nothing existing like that, but you can create your own solution.
For instance, we controlled a set of 3 small relays by using the parallel port.  Simply writing a high or low value on the appropriate line would open or close the relay.  However, you have to look at the specs of the relay and make sure it does not overload your port.
RayR
From: Shun on 7 May 2008 10:40
Case Structure has alreay worked in my application. Thanks!
I have tried creating a simple relay control by using the case structure, but have no luck yet. (Many things tried. When I tried to connect an input from a Select Control to a tunnel of the Case frame, LV prompt me to change the tunnel from output (default?) to input, and I don't know how.)(The Case Structure does not allow to link one side to the other in a blank Case frame without any purpose. If it does the desired relay control can be easily done.)
I need the control to "pass a desired value" (or simply "connected") if TRUE and to "have nothing to do (or have no connection) with the input" if FALSE.
 
 
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