Inter project communication strategy

I have two LV projects in which I have developed tools to control two different types of instruments (A and B).
I now need to use both instruments to achieve a specific goal (optimize A for B). Specifically, I need to collect data in B, design an algorithm that sends instructions to A, collect data in B and sends back instructions to A, etc, until an optimum is obtained.
I can think of at least one way to do that:
modify project B to send instructions to a LV global/communication VI/queue/notifier which will be shared by the two projects.
The problem is, I have nver done that so I am not sure what the scope of, say a notifier is. If I create a notifier in a VI belonging to project B, can I refer to it by the same name in project A?
Thanks for your comments.

Well, since I am temporarily stuck with LV 2009 due to some FPGA support issue I have in LV 2010, I think I will use Datasockets.
I have played around with it a bit and here is what I am planning to do (attached):
- one project (untitled project 1) contains my DAQ GUI which needs to control the other instrument: in the example, it sends a "numeric" via a DS write. However, for my algorithm to be foolproof, I need to make sure that the other instrument has updated its status before I collect data. Therefore, after a write, I wait for the other guy to send an acknowledgment (using a read to another DS). When this is confirmed, I proceed.
- the other project (untitled project 2) is a simple GUI for the other instrument, which the user can control via a FP numeric. When it is "remotely" controlled by the previous one (that is when, timing out, it gets a new numeric from the DS used by the other GUI to send its instruction), it updates this control (it overrides any user action) and writes this value into the other DS to tell the remote controller that it has updated its status.
Do you see any flow in this logic? At least, it seems to work. Bear with me, this is a barebone architecture.
Attachments:
Datasocket.zip ‏27 KB

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