Echelon IzoT NodeBuilder - Manual (Page 171)

3. In the Name property, enter a name for the network variable as it will appear in the IzoT
Commissioning tool and other network management tools. This name must be unique to the
device, can contain up to 16 alphanumeric characters, and must start with a letter. The name
cannot contain spaces or the following characters: \ / : * ? “ < > |. The default name is nvValue.
4. If your device has a changeable interface (it has network variables with changeable types, or it
supports dynamic network variables), you can select the Has Changeable Interface check box so
that network integrators can change the network variable’s type. This option is only available if
you selected the Has Changeable Interface check box when defining the device’s program ID in
the Standard Program ID Calculator (see Specifying the Program ID in Chapter 5 for more
information). This check box is cleared by default.
Selecting this option lets you create a network variable that can send or receive different kinds of
information, depending on how the device is used. For example, you can implement a generic
PID controller device using a SNVT_temp_f as the initial type, and then let a network integrator
change the SNVT_temp_f network variable to a range of other types so that the PID controller
can control light, pressure, or other types.
5. In the Select Resource Type box, select whether the network variable you are adding is based on
a Standard or User-Defined type. If you select a User-Defined type, select the Scope of the
functional profile containing the network variable type. To use a User-Defined type, you must
first add the resource file containing the UNVT to the resource catalog as described in the
NodeBuilder Resource Editor User’s Guide.
6. In the SNVT or UNVT property, select the network variable to be added to the functional block or
device from the list.
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