Matrix Orbital LK162A-4T - Manual (Page 26)

Command Summary 22
6.7 Set and Save
Contrast Dec
Hex
ASCII 254 145
FE 91
■ æ
Contrast
Contrast
Contrast v7.2
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).
6.7 Data Security
7.1 Set
Remember Dec
Hex
ASCII 254 147
FE 93
■ ô
Switch
Switch
Switch v7.2
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.
7.2 Set Data
Lock Dec
Hex
ASCII 254 202 245 160
FE CA F5 A0
■ ╩ ⌡ á
Level
Level
Level v7.2
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 14: Data Lock Bits
Display Command Reserved Setting Address Reserved Reserved Reserved
7 6 5 4 3 2 1 0
Table 15: Lock Parameters
Reserved Place holders only, should be 0
Address Locks the Baud Rate and I2C address
Setting Locks all settings from being saved
Command Locks all commands, text can still be written
Display Locks entire display, no new text can be displayed
7.3 Set and Save
Data Lock Dec
Hex
ASCII 254 203 245 160
FE CB F5 A0
■ ╦ ⌡ á
Level
Level
Level v7.2
Locks certain aspects of the display to ensure no inadvertent changes are made. The lock is not affected by a
power cycle. A new level overrides the old, and levels can be combined. Default is 0.
Level Byte See Data Lock Bits table.