Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 110)

Reference
[ SYSTEM MENU ]
Quit
Transmit Mode
Maintenance Mode
2
Section 3-8
To set and quit the menu, press the [SAVE EXIT] touch switch. To quit without
setting, press [EXIT].
When “OFF” is set, the buzzer does not sound during operation.
ON: The buzzer will sound when a command from the Host is given, the screen
attribute has been set, or an error has occurred.
When “ERR ON” has been set, the buzzer will sound only when an error has
occurred.
The buzzer will sound when “Buzzer check” is selected in the Maintenance Mode
regardless of the buzzer setting.
4-8-3 Backlight OFF / EL Screen OFF Function
The NT600S has a function that turns off the backlight of the LCD panel or turns off
the EL screen if no operation is performed for a certain period of time in order to
maximize the service life of the backlight and prevent the formation of an afterim-
age on the EL screen.
An afterimage may occur if the same screen contents are kept displayed for a long
period. What is meant by “afterimage” is that previously displayed screen con-
tents are not cleared and are left on the screen.
Turning ON the Backlight / Redisplaying the Turned OFF Screen
When a touch switch on the NT600S is pressed, or when a screen is switched or
redisplayed by the host after the backlight or EL screen has been switched OFF by
the backlight OFF or EL screen OFF function, the backlight will turn on or the EL
screen will be redisplayed. Changes of numerals or characters displayed on the
screen will not cause the backlight to turn back on or the EL screen to be redis-
played.
Setting the backlight OFF / EL screen OFF Function
Use the memory switches to set whether or not the backlight OFF function and EL
screen OFF function are used, and the length of time that the backlight or the EL
screen is turned off.
The factory setting specifies that the backlight or EL screen will turn off if no opera-
tion is performed for 10 minutes.
Set the backlight OFF function or EL screen OFF function by operation from the
System Menu as described below.
Select “Maintenance Mode”.