Error -1950678986 Using Shared Variables Bound to Fieldpoint I/O Items

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Hardware: Compact FieldPoint

Problem:
I have a shared variable bound to a channel on my FieldPoint and whenever this channel goes Out of Range my shared variable reads are returning an error -1950678986 Unspecified shared variable error. Is this expected behavior when my FieldPoint channel goes out of range? How should I handle this?

Solution:
This is expected behavior of the shared variable and should be handled in your application. One example of a proper way to handle this would be to watch for this error and display an appropriate message to the user as shown in Figure 1.

Figure 1: Block Diagram

Pass the error out of the shared variable into an Unbundle By Name function. Then, if the error code is equal to -1950678986 and an error has occurred (status=true) then display a message ERROR: Value out of range to the user. If the error code is not equal to this number then you could display a Value good message to the user. Figures 2 and 3 show how this would look on the front panel of your VI.