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L-INX/L-GATE User Manual 86 LOYTEC
Version 7.2 LOYTEC electronics GmbH
Figure 71: Use external variables
The Functionplan ‘Plan_1’ represents now a simple program. It adds a defined value to the
value of the input variable and sends the result to the output variable.
Add all expected functionality to the ‘Plan_1’ or use different Functionplans to split up the
expected functionality into smaller pieces. But take care about the name and type declaration
of external variables when using more than one Functionplan. All external variables with the
same name refer to the same global variable.
After adding all functionality, global variables matching the requirements of the defined
external variables, must be generated. A tool automatically performs the process of
generating the global variables object and the required global variables.
Figure 72: Auto-create global variables
To start the creation of global variables, based on external variables, Save all changes, then
right click the L-INX device and select Global Variables

Generate . Then the selected
L-INX resource is parsed and every program instance found is checked for external variables.
In Figure 72 the type instance Plan_1 refers to the Functionplan ‘Plan_1’, as defined in Figure
71. If there are more Functionplans than the predefined ‘Plan_1’ appropriate program
instances for these plans must be added to the resource before creating the global variables.
Anyway, only Functionplans referred from program instances are executed.