With the help of MAX vs Teststand for switching

Can someone explain what is happening here?

I went to MAX and gave all my or alias switches (MUX).  This is the tab of channels/exclusions.  According to the diagrams tab is a road named column groups. I can give my Relay connection (as close to relay 2) alias here... like 'Close Relay 2 '.  If I click on relay 2 on the diagram, it shows a link between ch2 and com.  Fine.   Now when I go in Teststand > tab properties > switch > activate the change... I have the 'operation' 'Connect'  Is - this redundant?  I already connected when I called him.  If its Teststand because does not know what I want, when I call this particular alias he "cut" when I select disconnect from the drop down?

You would say I leave ALL my relay open in MAX and just 'Connect' 'disconnect' in Teststand?

Can you suggest what should be the other options though:

I want to connect 1 or several relay for this sequence, do tests, then disconect the relays?  -What connection Liftetime?  So 'Step '?

What is multimode and when and how to use it?

Included some screenshots

Thank you!

Clint

Hey Clint,.

NEITHER Switch Executive exists in MAX and TestStand (and LabVIEW, etc.).  You can program individual routes to TestStand, or you can beforehand create complex route groups to the MAX, and then call the road/route groups TestStand.  Suppose for example that you want to connect A to B, C, D, E and F, you can create a great course called 'channels' band in MAX, then add explicit connections to this group of ranges (from A to B, C, D, E and F).  You simply connect 'great channels' now in TestStand and NI Switch Executive will do the rest.

While you can connect channels in MAX, the intention is that you create route groups in MAX and then use these groups of road to the test (if for no other reason than TestStand is automated so that MAX is not).  At the end of the day, you can use the SW but you wish to, but we intend to the run-time execution to automate in teststand.  Think that MAX is the debug/configuration environment.

Connection Lifetime is how long the relays must stay in touch.  For example, inflicting on life 'Step' means that, after this step TestStand is completed, the relay will be disconnected.

Desktop mode is the concept that a relay can be connected more than once in the software.  Until the connection number is 0, the relay is open.  If the number of relays is greater than 0, then the relay is closed.  For example, suppose that you have two different tests that can run simultaneously, and they share the same relay.  Specifically, 1 tuberculin relay A and B, while the tuberculin 2 relay B and C.  If you are able to run both events at the same time (function of your DUT), then when you connect test 1 and 2 at the same time, relay A and C will be all both have a connection of 1 account (they were connected once), but the relay B will be 2 connections.  Thus, when testing 2 finishes and disconnects its associated relay, test 1 could still be running; Since the relay B will have a connection of 1 account after test 2 'disconnects' relay B, relay B will always be closed and 1 test will not be interrupted.  The concept takes a minute to wrap your head around, but finally it is quite powerful.

OR Switch Executive is a very powerful program.  Once you've played a little with it for a bit, it is intuitively easy, but there is a curve of rampup higher compared to our other software program switch (OR-DAQmx, OR-Switch, etc.).  OR Switch Executive is particularly well suited for TestStand.

Let us know if you have any other questions or if my answers are not clear.  Have a great day!

Tags: NI Products

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