National Instruments BridgeVIEW 用户手册
Chapter 16
Program Design
16-4
© National Instruments Corporation
output that is used as the input to another subVI, try to align the input and
output connections. This technique simplifies your wiring patterns.
output connections. This technique simplifies your wiring patterns.
SubVIs with Required Inputs
On the front panel, you can edit required inputs for subVIs by clicking
the icon pane on the upper-right side of the window and choosing
Show Connector»This Connection Is. From the submenu, choose
between the Required, Recommended, or Optional options.
The following illustration displays the submenu options.
the icon pane on the upper-right side of the window and choosing
Show Connector»This Connection Is. From the submenu, choose
between the Required, Recommended, or Optional options.
The following illustration displays the submenu options.
If you want to return to the icon pane in the front panel, pop up on the
connector pane and select Show Icon.
connector pane and select Show Icon.
Good Diagram Style
In general, avoid creating a block diagram that uses more than one or two
screens of space. If a diagram becomes very large, decide whether you can
reuse some components of your diagram in other VIs, or whether a section
of your diagram fits together as a logical component. If so, consider
dividing your diagram into subVIs.
screens of space. If a diagram becomes very large, decide whether you can
reuse some components of your diagram in other VIs, or whether a section
of your diagram fits together as a logical component. If so, consider
dividing your diagram into subVIs.
With forethought and careful planning, it is easier to design diagrams that
use subVIs to perform specific tasks. Using subVIs helps you manage
changes and debug your diagrams quickly. You can determine the function
of a well-structured program after only a brief examination.
use subVIs to perform specific tasks. Using subVIs helps you manage
changes and debug your diagrams quickly. You can determine the function
of a well-structured program after only a brief examination.
Watch for Common Operations
As you design your programs, you might find that you perform a certain
operation frequently. Depending on the situation, consider using subVIs or
loops to perform an action repetitively.
operation frequently. Depending on the situation, consider using subVIs or
loops to perform an action repetitively.