# Configuring Async Data

1. Select a controller in the Plant structure window .

2. Select the Fieldbus and SoftPLC tab in the menu bar.

   Select the Fieldbus sub-tab to show a list of maps.

3. Double-click on the name of a map to view it or select Add to create a new one.

   The workspace shows the configuration menus.

4. Select the To Controller tab or the From Controller tab in Fieldbus configuration menu.

5. Select Add.

   The Create signal configuration dialog window opens.

6. Select the Fieldbus AsyncData to PF when the To Controller tab is selected or Fieldbus AsyncData from PF when the From Controller tab is connected.

7. Enter the BYTE number in which the least significant BIT is located.

8. Set the item starting position by typing the BIT in which the least significant BIT is located.

9. Set the Length of the item, expressed in number of bits.

10. Select Close to terminate the adding operation and to close the dialog window.