Rockwell Automation 2711E-ND1 Reference Manual PanelBuilder 1400e - Manual (Page 106)

100 Push Buttons
Publication 2711E-6.15 – November 1998
Field Meaning
Control The Normally Open Momentary Push Button uses the following
controls:
Button Control records the status of the button: 1 when the
button is pressed and 0 otherwise. You can assign only a tag to
this control.
The Push Button Hold Time, as selected in the Timing
Parameters tab of the Configure Terminal Setup dialog box,
ensures that the value at this control is held for at least the
specified duration.
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
releases it. 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.
To provide a visual handshake with the PLC, assign different
PLC addresses to the Button Control and Indicator State
control. Program the PLC to set the Indicator State control to 1
when the Button Control is 1, and the button displays state 1.
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.
Since these controls use only two values, digital tags are
recommended.
You can adjust the size of the Normally Open Momentary 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.