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6-9
Section
System Settings
138
The default setting is OFF.
Reference:
S
The Battery is optional for the NT21 and is sold separate. No Battery is
installed at the factory.
S
Do not turn ON the the “Battery Low Check” memory switch when a Battery is
not installed. The battery low indicator will remain ON constantly.
S
Bit 13 (Battery Status) in the PT Status Notify Bits in the PT Status Notify Area
will turn ON when the Battery voltage drops.
S
The status of the Battery can also be checked by selecting “Battery” from the
Device Check menu. This item can be used to check the status of the Battery
regardless of the setting of the “Battery Low Check” memory switch.
To set other memory switches, select the relevant screen using the [ ] (next
screen) or [ ] (previous screen) touch switch, then make the setting.
•
To confirm the settings and quit the memory switch setting screen, press the
Quit touch switch. The settings made last will be set and the NT21 will return to
the MAINTENANCE MODE MENU screen.
•
To quit the memory switch setting screen without confirming the settings, press
the Abort touch switch. The NT21 will return to the MAINTENANCE MODE
MENU screen with the previous settings still in effect.
6-9-6 Setting the Screen Saver Timer
The NT21 has a screen saver function to extend the life of the backlight and pro-
tect the LCD screen from screen-burn by having an image displayed too long. If
no operations are performed after a set time, the screen display will be turned
OFF automatically and a character string will be displayed at random positions
on the screen.
The Screen Saver Movement setting determines whether or not the character
string will be displayed while the screen display is OFF.
•
If Display is selected, the character string stored in character string memory
table entry number 0 will be displayed, and the backlight status will not change.
•
If Display erase is selected, the character string will not be displayed, and the
backlight status will turn OFF.
The default (factory) setting is Display erase.
The Screen Saver Start up Time setting determines the time interval before the
screen saver function operates.
The setting range is 0 to 255 minutes. The default (factory) setting is 10 minutes.
If 000 is set, the screen saver function does not operate.
The screen saver can be canceled, and former screen redisplayed, by any of the
following operations.
•
Touching any part of the touch panel
•
Screen switching due to PT Status Control Area operations
•
Screen switching due to bit memory table operations
•
Execution of any of the following PT status control bit operations:
•
Changing the backlight mode
•
Screen display (change from OFF to ON)
Reference: The screen saver function operates only when the NT21 is in RUN mode. The
screen saver function will not start in System Menu or System Installer mode.