# Understanding the Fieldbus Configuration and the Fieldbus Map

In the Fieldbus configuration menu it is possible to edit the fieldbus map. Items can be added, deleted or moved inside the map.

The fieldbus map

A | Tabs; selects the receive map or the transmit map | B | The map shown in a graphical presentation of how items are placed
C | The map shown in a table presentation of how items are placed | D | Command buttons to Add or to Delete items from the map
E | Colour coded example of item positions |  |

If a row is selected in the list, the item is highlighted in the list and on the map.

If an item is selected on the map it is highlighted on the map and in the list.

An item can occupy one single bit or extend over several bits. An item position is always described with a starting position of the least significant bit. The starting position points to a byte and bit. The length parameter indicates how long the item stretches from right to left.

Items are added or edited in a pop-up window.

Pop-up window to add or edit items in the fieldbus map

A | Add item or Edit item pop-up window map | B | List of available items
C | Byte position | D | Bit position
E | Item length parameter field | F | Item information field
G | Command buttons |  |