# Creating a Controller Fieldbus Configuration

1. Select a controller in the Plant structure workspace.

2. Select the Fieldbus and SoftPLC tab then select the Controller Fieldbus sub-tab.

3. Select Add.

   The Create new fieldbus configuration window comes into view.

4. Enter a Name for the new Controller Fieldbus configuration.

5. Enter a Size to controller number. This is the receive size of the data frame to a Virtual Station, expressed in the number of bytes. This value must be an even number.

6. Enter a Size from controller number. This is the transmit size of the data frame from a Virtual Station, expressed in the number of bytes. This value must be an even number.

7. Select Add.

A new Controller Fieldbus configuration is created and displayed.