Rockwell Automation 2711E-ND1 Reference Manual PanelBuilder 1400e - Manual (Page 113)

107 Push Buttons
Publication 2711E-6.15 – November 1998
Field Meaning
Control The Maintained Push Button uses the following controls:
Button Control records the status of the button. You can
assign only a tag to this control.
When the button is first pressed, the control is set to the value
of the state not configured as the initial state. This value
remains until the button is pressed a second time, resetting the
control to the initial state value.
The button is aware of external control value changes. If the
Button Control value changes to one that does not match any of
the state values, the next button pressed sets the button to
state 0.
Note: If you do not assign this control, an error state occurs
when the object is displayed on the PanelView terminal. The
button displays state 1 without its label, alerting the operator to
the error state.
Indicator State controls the display state of the object. You can
assign a tag or expression to this control.
If you assign just the Button Control and not the Indicator State
control, the button state is displayed as soon as the button is
pressed and released. The feedback for this control is local and
immediate. It does not necessarily reflect the Button Control’s
value.
If you assign the same tag to the Button Control and Indicator
State control, the terminal displays the button state based on
the Button Control value. The button displays state 1 when the
operator presses it, and displays state 0 when the operator
presses it again. This is a more reliable way of configuring the
button; however, if traffic is heavy over DH+ or ControlNet, the
display response may be delayed.
You can provide a visual handshake with the PLC by assigning
different PLC addresses to the Button Control and Indicator
State control. If the PLC is programmed to match the value of
the Indicator State control to the value of the Button Control, the
button changes to the state with that value.
If the Indicator State control value does not match any of the
state values, an error state occurs and the button displays state
1 without labels.
You can adjust the size of the Maintained Push Button and format its
foreground color, background color, button margins (touch screen
applications only), border style, fill style, and blink attributes. For
details on formatting objects see “Changing Object Appearance” in
Chapter 9, Creating Objects, in the PanelBuilder 1400e
Configuration Software for Windows User Manual.