title: LabView: Pass value between while loops
body: <p>I've got a vi with two infinite while loops.  The left loop continuously reads data from a device and plots it, the right loop calls a custom DLL and uses the output to drive another device.  The DLL call blocks for about a second, so the two loops are not syncronized*.  Now I'd like to use the momentary value from the first loop as an input to the DLL in the second.  I tried just connecting them - LabVIEW inserts terminals at the loop boundaries - but then the second loop doesn't run.  (If it matters, the data type is "dynamic data" - a voltage measurement).  How do I do it?</p>
  
  <p>(* In fact, originally there was only one loop, and the graph only got updated between DLL calls, which was not satisfactory.)</p>