Chapter 4. Toolchest Components
GFK-2928
December 2017
15
Dual Bus Parameters
Select the function block in the rung that immediately follows the comment rung containing the text “
Initialize
the Genius Bus definition blocks
”
. Double-click on the function block to zoom into, and explore the logic that is
contained in the block. This block will require editing in order to enter parameters that define the operation
and devices on the corresponding dual bus.
Figure 10: Edit Genius Bus Definition Block(s)
Note the variable on the left side of the function block.
This a “user
-
defined type” that contains the detailed
information specific to the dual bus. When the function block executes, the user-supplied entries present in
the structured text are assigned to the members of the bus variable.
NOTE
:
A new variable must be declared for each additional dual bus.