Configuration of Global Data Variables
Original instructions
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Configure Variables
Before you configure Global Data variables, you must go to the Control Expert variable editor:
Step
Action
Illustration and Comments
1
In the Project Browser, go to the Structural view and double-click Variables and FB Instances (see figure at right).
Result: The Data Editor table (in step 3) appears. By default, the Global data column does not yet appear.
2
To make the Global data column visible, right-click in the first row on the Data Editor screen, and scroll down to Customize Columns. The Customize Columns window appears (see figure at right).
Select the Global Data check box, and press OK.
3
The Data Editor screen appears:
4
In the Global data column, there are three choices for variable configuration: NO, PUB, and SUB.
Definition of variable types:
  • NO: neither published nor subscribed
  • PUB: published
  • SUB: subscribed
5
Give the Global Data group a name in the Group field.
6
Fill in the DataID field: identifier of a remote stations in a distribution group.
NOTE: IODDT data structures for M340 devices are different from the data structures for Premium and Quantum PLCs.