ABB Advant Controller 80 User Manual page 64

Each node is represented by a DB element of the type MVINODE.
Figure 4-19 The terminals of the MVINODE element.
The MVB (MVI Data Block) element specifies one MVI data block. It
configures either data transmission or commands for the MVI protocol
handler. An MVI data block is a collection of up to 128 DATs of any
type.
Creating an MVI data block element automatically creates the required
DAT elements. This element has a Base part and nine different Value
reference parts. Each Value reference part contains 16 value
references.
Figure 4-20 The terminals of the MVB element.
4-26 AC 80 User's Manual