Beckhoff EL3681 Documentation page 75

Commissioning
Fig. 67: Linking the structure
7. In the PLC, the process data can then be read or written via the structure in the program code.
Fig. 68: Reading a variable from the structure of the process data
Activation of the configuration
The allocation of PDO to PLC variables has now established the connection from the controller to the inputs
and outputs of the terminals. The configuration can now be activated with or via the menu under
"TwinCAT" in order to transfer the settings of the development environment to the runtime system. Confirm
the messages "Old configurations will be overwritten!" and "Restart TwinCAT system in Run mode" with
"OK". The corresponding assignments can be seen in the project folder explorer:
A few seconds later, the corresponding status of the Run mode is displayed in the form of a rotating symbol
at the bottom right of the VS shell development environment. The PLC system can then be started as
described below.
EL3681 Version: 3.0 75