Hi Matt,
I'm assuming you're working with LabVIEW 8.0, but please correct me if
I'm wrong. Also, it is useful to know how your variables are
linked to the Modbus channels. Are they shared variables with the
'bind to source' option chosen, are they linked on the front panel via
DataSocket, etc?
Typically, we would have a set of shared variables in a project library
bound to the ModBus items. We can set options for the project
library containing the variables by right-clicking on the library and
choosing the "Autodeploy Variables" option to ensure that you do not
have to manually deploy the variables for use in your VI. Make
sure that you have this setting selected for each variable library and
that you have all of the shared variables you wish to communicate with
included in your project.
Cheers,
Matt Pollock
National Instruments