<9. Advanced Engineering >
● Device Label Variable
Device labels defined using DeviceLabelDefinition in Logic Designer are
automatically converted into device label variables. These device label variables are
global variables and so can be used within any logical POU.
These created device label variables are sorted by I/O type into four variable groups
on the global variable worksheet.
DeviceLabel_Input_A : Group for analog inputs
DeviceLabel_Input_D : Group for digital inputs
DeviceLabel_Output_A : Group for analog outputs
DeviceLabel_Output_D : Group for digital outputs
Precautions about device label variables
As the four variable groups described above are dedicated to device label variables,
do not define other types of global variables within these groups.
Defining non device label variables within these groups does not affect control itself
but any attempt to open the DeviceLabelDefinition will be disallowed with the
following error message displayed.
If this error message is displayed, move non device label variables included within
the above four groups to other groups. This will allow DeviceLabelDefinition to be
opened.
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