Omron NT31C Reference Manual page 402

Examples of Actual Applications of Direct Access
Example:
1, 2, 3...
Suggestions
• In order to display TEMPERATURE ABNORMAL with no frame, make its
background color the same as that of other screens ( Alarm List , page 173).
• So that TEMPERATURE ABNORMAL is displayed regardless of which screen
is currently displayed, display the overlapping screens created in (4) at the PT
( Overlapping Screens , page 36).
• As an alternative to making every screen an overlapping screen, the same re-
sult can be achieved by registering an alarm list on every screen.
• The same kind of display can be displayed even though ON/OFF switching
guide characters are set for a normal lamp (N ormal (Standard) Lamps, page
103).
Displaying a screen with TEMPERATURE ABNORMAL in black on a red back-
ground when the monitored PC bit comes ON.
TEMPERATURE
ABNORMAL
1. Set the properties of the screen displayed when the bit comes ON as fol-
lows.
• Background color:
2. Register a fixed display text element for the screen set in (1) as follows.
• Text:
• Foreground Color:
• Background color:
3. Make the following settings for any bit memory table.
• PC Address:
Number of the PC bit to be monitored
• Function:
Switch screen
• Screen No.:
Number of the screen set in (1) and (2)
Suggestions
• In this method, after switching to the error screen, the error screen remains dis-
played even if the status of the monitored PC bit changes back from ON to OFF
( 2-3-3 Bit Memory T ables , page 75). After checking the error at the equipment,
one of the following methods must be used to return to the screen that was dis-
played before the error occurred: using a touch switch with the switch screen
function (page 122), writing a screen number to the control area (page 47), or
switching the screen by using a bit memory table (page 75).
PT
ON
Screen switched
Red
TEMPERATURE ABNORMAL
Black
Transparent
Section 5-1
PC
Bit
1
393