User`s guide

Agilent VEE Programming Techniques Chapter 2
VEE User’s Guide 111
There are exceptions to this sequence of events:
• You can add error output pins to trap errors inside an
object. The error output pins override the standard object
behavior. If an error occurs when the object executes, the
error pin will send out a message and the data output
pins will not fire.
• You can add control input pins to some objects, and they
may cause the object to perform some immediate action.
For example, an object sub- function such as Title or
Autoscale in the Waveform (Time) display can be
performed with control pins. Control lines to an object
are shown in VEE programs as dashed lines
For example, Figure 69 shows a control line that sets a
custom title for the waveform display. Note that the object
is not required to have data on a control pin to perform
this action. The object does not execute, only the action
such as setting the title is performed. You can click Show
Data Flow to see how the control line to the Title control
input will carry data first.