VK204-25-422-E Matrix Orbital, VK204-25-422-E Datasheet - Page 33

• Manufacturer Part Number: VK204-25-422-E
• Description: VF CHARACTER DISPLAY 20X4 RS422
• Manufacturer: Matrix Orbital
• Series: LK204-25r

Specifications of VK204-25-422-E

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7. Display Functions
7.1. Display On
Turns the display backlight on for a specified length of time. If an inverse display color is used this command will
essentially turn on the text.
Minutes
7.2. Display Off
Turns the display backlight off. If an inverse display colour is used this command will turn off the text.
7.3. Set
Immediately sets the backlight brightness. If an inverse display color is used this represents the text colour
intensity instead. Default is 255.
Brightness
7.4. Set and Save
Immediately sets and saves the backlight brightness. Although brightness can be changed using the set command,
it is reset to the saved value on start up. Default is 255.
Brightness
7.5. Set
Immediately sets the contrast between background and text. If an inverse display color is used this also represents
the text brightness. Default is 128.
Contrast
7.6. Set and Save
Immediately sets and saves the contrast between background and text. Although contrast can be changed using
the set command, it is reset to this saved value on start up. Default is 128.
Contrast
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Brightness*
Contrast*
Brightness*
Contrast*
1 byte, number of minutes to leave backlight on, a value of 0 leaves the display on indefinitely
1 byte, contrast level from 0(Light) to 255(Dark)
1 byte, contrast level from 0(Light) to 255(Dark)
1 byte, brightness level from 0(Dim) to 255(Bright)
1 byte, brightness level from 0(Dim) to 255(Bright)
Dec
Hex
ASCII
Dec
Hex
ASCII
Dec
Hex
Dec
Hex
ASCII
Dec
Hex
Dec
Hex
254 70
254 152
254 145
254 66
FE 46
FE 42
254 153
254 80
■ F
FE 98
FE 91
■ B
FE 50
FE 99
■ P
Minutes
Minutes
Minutes
Brightness
Brightness
Contrast
Contrast
Contrast
Contrast
Contrast
Brightness
Brightness