GPIB Daisy Chain Addressing Help

[sullivnc]

I am working on setting up some new equipment, a second setup of one we already have.  In both setups, we are using only one GPIB-ENET/100 and one GPIB-232CV-A with LabVIEW.  On the original setup, which works fine, here is the order of connection:

Computer --> GPIB-ENET/100, connected by an ethernet cable

High-Voltage Power supply --> Lock-In Amplifier --> GPIB-ENET/100 --> GPIB-232CV-A, daisy chained together with GPIB cables

The GPIB-232CV-A has a dip switch address 1, and is also running a DB-9 cable out to a series of stepper motor controllers.  In my Global addresses VI, these stepper motor drives are given a global address of 1, which I understand.  What I don't understand is why the High Voltage has an address of 3 and the Lock-In has an address of 4, which my other VI's do call out in order to communicate with them.  Does this have something to do with the daisy chain order?  Again, there is only one GPIB-232CV-A being used, and it has an address of 1.  Thanks.

[sullivnc]

Anybody?  Anybody from NI??

[gbaby]

I'm not completely sure what you are asking. I know for a fact that the order of connection within a GPIB daisy chain doesn't affect the address of instruments; most instruments can be assigned any address within particular bounds. Are you having trouble with your setup, or are you just confused on the topic of addresses?

[sullivnc]

As I said, we are only using 1 GPIB-232CV-A, which is controlling the stepper motor drives.  In this first picture, you can see my global variables.  The 3 at the top are supposed to be GPIB addresses.

In this next picture, you can see how my Read Lock-In Output VI calls a GPIB address that shouldn't exist.  However, it works perfectly even though it is only daisy chained to a GPIB-232CV-A with an address of 1.

[sullivnc · Accepted solution]

Nevermind, my devices have internal GPIB addressing