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8 data security – Matrix Orbital LK204-7T-1U User Manual

Page 29

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7.5 Set Backlight
Colour

Dec
Hex
ASCII

254 130

FE 82

■ é

Red Green Blue
Red Green Blue
Red Green Blue

v5.0

Set the colour of a tri-colour backlight. Only for tri-colour displays. Default is white (255, 255, 255).

Red

Byte

Brightness level of Red from 0(Dim) to 255(Bright).

Green

Byte

Brightness level of Green from 0(Dim) to 255(Bright).

Blue

Byte

Brightness level of Blue from 0(Dim) to 255(Bright).

7.6 Set
Contrast

Dec
Hex
ASCII

254 80

FE 50

■ P

Contrast
Contrast
Contrast

v5.0

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

Byte

Contrast level from 0(Light) to 255(Dark).


7.7 Set and Save
Contrast

Dec
Hex
ASCII

254 145

FE 91

■ æ

Contrast
Contrast
Contrast

v5.0

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

Byte

Contrast level from 0(Light) to 255(Dark).

6.8 Data Security

8.1 Set
Remember

Dec
Hex
ASCII

254 147

FE 93

■ ô

Switch
Switch
Switch

v5.0

Allows changes to specific settings to be saved to the display memory. Writing to non-volatile memory can be slow
and each change consumes 1 write of at least 100,000 available. The Command Summary outlines which
commands are saved always, never, and when this command is on only. Remember is off by default.

Switch

Byte

1 for on or 0 for off.

8.2 Set Data
Lock

Dec
Hex
ASCII

254 202 245 160

FE CA F5 A0

■ ╩ ⌡ á

Level
Level
Level

v5.0

Temporarily locks certain aspects of the display to ensure no inadvertent changes are made. The lock is released
after a power cycle. A new level overrides the old, and levels can be combined. Default is 0.

Level

Byte

Lock level, see Data Lock Bits table.

Table 19: Data Lock Bits

Display Command Reserved Setting Address Reserved Reserved Reserved

7

6

5

4

3

2

1

0