Rockwell Automation 2711-ND3 PanelBuilder v2.60 Software User Manual - Manual (Page 46)

3–4 Planning an Application
Publication 2711-6.0
When placing push buttons on a screen:
!
ATTENTION: Don’t place emergency stop buttons
or controls critical for safe operation on a screen. Use
separate hard-wired operator interface devices. The
inside cover of this manual references appropriate
standards.
•
Don’t place important buttons in the center of touch screens
where they may be blocked temporarily by terminal messages,
the Alarm Banner, or the scratchpad.
•
Don’t place push buttons in the same area on screens that follow
one another. An operator may press the same position, mistaking
a stop button on one screen for a start button on another.
!
ATTENTION: Don’t press multiple touch screen
objects at the same time. Pressing multiple objects
simultaneously may result in unintended operation.
•
Place touch screen objects far enough apart so the operator would
naturally lift a finger to move to the next object. Touch screens
are intended for a single object press.
Push buttons are disabled for 1 /
2
second after a screen change.
Also, when a new screen appears, push buttons from the previous
screen must be released before the terminal responds to push buttons
on the new screen.
Figures 3.1 – 3.2 show the Keypad and Touch Screen Worksheets for
the PanelView 900 terminals. Worksheets for other terminals are in
Appendix C. Use these worksheets to draw your application screens.
At the top of each screen, enter the application name, screen
name/number and project name that you want to link to the
application. The project defines tag addresses and devices
(PanelView terminal and controller) that will communicate.
The number and size of objects you can place on a screen is limited
only by screen space. On touch screen terminals, each input control
should occupy at least 1 touch cell. The number of available touch
cells depends on the terminal size. The PanelView 900/1000/1400
Touch Screen terminal has 384 touch cells. The PanelView 550/600
Keypad & Touch Screen terminal has 128 touch cells.
Each screen must contain a screen selector allowing the operator to
navigate between screens in an application. You can assign a screen
selector to a touch cell and/or a function key.
Review Chapters 7 – 14 on screen objects before completing the
worksheets. Also review memory requirements (at end of chapter)
for hints on reducing the byte size of an application.
Screen Worksheets
Safety Considerations