Chapter 4
Running Applications
4–4
Data display screens show either the actual or scaled value of a logic
controller data address.
Pump 1 Pressure = 150 PSI
Counter = 5
Data Display Field
Data Display Field
Data displays are updated at different intervals depending upon the
application and the size of the network.
Bar graph displays provide a graphical representation of an actual or scaled
value at a logic controller data address.
1700
Bar graph displays may also contain a data display field showing the actual
numeric value.
Data entry screens contain an entry field. The length and format of the data
entry field is selected by the application designer. In addition, the application
designer can place a data display field on the same screen:
Temp = 120 Deg F
Enter New Temp:
Data Entry Field
Data Display Field
The data entry field must always appear last on the screen. The application
designer cannot place text after a data entry field.
To enter data, use the numeric keypad. To modify an entry, press the clear
entry key [CE] and re-enter the value. Press the [
+
/
–
] key to toggle between
positive and negative values. Press [
] after the entire value is entered.
Data entry screens can have a default value appear in the data entry field.
A flashing cursor identifies the first digit of the default value. Pressing
[
] writes the default to the controller or you can enter a different value by
pressing the [CE] key.
If a data display is included on a data entry screen, the data display value is
only updated when the screen is entered. Data does not update continuously.
Data Display Screens
Bar Graph Screens
Data Entry Screens
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