Omron NT31C Reference Manual page 257

Special Functions
2-16-8 Adjusting Contrast and Brightness During PT Operation
Displaying the
Brightness and Contrast
Adjustment Screen
Brightness Adjustment
Contrast Adjustment
246
Frequency order
No. Comment
1 WATER TANK OVERHEATING
2 WATER TANK TEMP. TOO LOW
3 PROCESS 3 STOPPED
4 TEMP. OUT OF SETTING RANGE
5 SUPPLY MATERIAL A
6 PROCESS 5 EMERGENCY STOP
7 SUPPLY LABEL PAPER
8 SUPPLY MATERIAL B
9 PROCESS 2 STOPPED
10 PROCESS 1 STOPPED
With the NT31/31C and NT631/631C, in addition to using the System Menu
(Maintenance Mode → I/O Setting), you can also adjust the backlight brightness
and contrast while the PT is in operation.
While the PT is in operation, display screen number 9030, the brightness and
contrast adjustment screen, by specifying the screen in the PT status control
area, or by using a touch switch with a screen switching function. After displaying
the screen, make the desired settings.
The brightness and contrast adjustment screen can be displayed using either of
the following two methods.
Using a Touch Switch
The brightness and contrast adjustment screen can be displayed using a touch
switch with a screen switching function as shown below.
Touch switch
Contrast
Using the PT Status Control Area
The brightness and contrast adjustment screen can be displayed by specifying
9030 as the display screen in the PT status control area as shown below.
You can set the backlight brightness to one of three steps using the High, Middle,
or Low touch switches. The backlight brightness can be adjusted while checking
the actual screen.
At normal operating temperature, the backlight service life varies with the back-
light brightness setting as follows:
• High: 10,000 hours
• Middle or Low: 25,000 hours
You can set the contrast to one of 100 steps. Make the desired setting using the
following four buttons:
Cnt.
15
14
10
8
7
7
6
5
1
1
Brightness and contrast adjustment screen
PT
BRIGHTNESS AND CONTRAST
ADJUST
Brightness
High
Middle
Low
Section 2-16
1/1
Quit
Contrast