Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL - Manual (Page 101)

Planning Your Application
Chapter 4
4-26
To save application memory, consider the following options:
when creating spaces between words in object text, use the space bar
instead of the right arrow key. The space character will appear as an
underscore in PanelBuilder, but will be a space on the PanelView
terminal screen. When the right arrow is used, each word becomes a
separate text element requiring 8 bytes of memory, whereas the space
character requires one byte
when using the Multi-State Indicator, delete all states not being
used—four states is the default
when drawing rectangles, use the Box object instead of drawing each
side with a Line object. Each line requires 9 bytes, whereas one Box
object requires 9 bytes
if a Multi-State indicator will have the same text for all states, use outer
text and a solid indicator instead of state text. Outer text requires eight
bytes for each text string plus one byte per character; state text would
require the same amount of memory for each state
in general, limit the use of text when assigning screen names, messages
and object text
The sample application consists of three screens: a main screen, a screen to
control five conveyor belts, and a screen to control five pumps and monitor
the pressure in five associated vessels. The application:
turns five conveyor belts on and off
selects one of five pumps and turns it on or off. The pumps maintain the
pressure (PSI) in associated vessels. The operator can monitor the
pressure of each vessel
The Sample Application is designed for:
a color keypad terminal
a PLC 5/15
a quarter rack space
Reducing Memory
Requirements
Sample Application Planned
with Worksheets