Rockwell Automation FactoryTalk View Machine Edition Users Guide - Manual (Page 411)

21 • Set up graphic objects
21-19
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Interlocked push buttons work in groups, and share the same tag. Pressing one button
cancels another. Although Interlocked push buttons work as a group, you add them to the
display one at a time.
Ramp buttons increase or decrease the value of a tag by either an integer or floating-
point value. You can use two Ramp buttons together to create an increment/decrement
control, for example for the speed of a motor. Or, you can use a Numeric Input Enable
button or numeric input cursor point.
For information about the Numeric Input Enable button, see page 21-30. For information
about the numeric input cursor point, see page 21-31.
Set up Momentary push buttons
Use the Momentary push button to start a process or action. When pressed, the button
changes a tag to one value, and when released, the button changes the tag to another value.
The Momentary push button’s states can perform one of three kinds of actions:
 Change the Value connection to 1 when the button is pressed, and to 0 when the button
is released. This kind of button is called normally open, because its released state is
off. Pressing the button completes the circuit.
 Change the Value connection to 0 when the button is pressed, and to 1 when the button
is released. This kind of button is called normally closed, because its released state is
on. Pressing the button breaks the circuit.
 Change the Value connection to a value you specify. You assign the desired values to
the button’s press and release actions. For example, 50 when pressed, and 100 when
released.
The error state
The button’s error state is shown at run time when:
 the Value connection is unassigned.
 the Indicator connection’s value does not match one of the state values you set up.