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what is the different between bus and hardwire

I have two PXI-2532 switch card,and I expansion it to 8X128 matrix,when I use it in NISE,I donn't know how to config bus and hardwire,it seems to  paly the same role.and I config it in the following picture,I donn't know is it right.Is there another method better?
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Hi 还是秘密,

I believe your image is correct.  Verify your procedure with the one below.  Also, you can reference the attached image.

In Switch Executive, click on the Hardwires/Buses tab.
Add a Bus.
Highlight your first IVI Switch and check Connect to Bus.
Select a Base Channel of r0 and an End Channel of r7.
Highlight your second IVI Switch and check Connect to Bus.
Select a Base Channel of r0 and an End Channel of r7.
 

Buses are a group of hardwires.  For more information, please reference the NI Switch Executive Help.  The topics of interest can be found by expanding the following:

NI Switch Executive Help>>Configuration>>In MAX>>Hardwires/Buses Tab

To summarize that information, you want to use buses to quickly create a group of hardwires together and associate them with a single alias name.  Buses are particularly helpful when hardwires are used for column or row expansion in a matrix where a series of channels are connected to another series of channels.  So, in your case, a bus may be easier to create as an alternative to 8 hardwires.

Let me know if you have further questions!

Chad Erickson
Switch Product Support Engineer
NI - USA

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