37
6.13
Data Security
13.1
Set
Remember
Dec
Hex
254 147
FE 93
Switch
Switch
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
1 byte, 1 for on or 0 for off
13.2
Set Data
Lock
Dec
Hex
254 202 245 160
FE CA F5 A0
Level
Level
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
1 byte, each bit representing a level, see Table 42
Table 42: Data Lock Bits
Display Command Filesystem Setting Address Reserved Reserved Reserved
7
6
5
4
3
2
1
0
Table 43: Lock Parameters
Reserved
Place holders only, should be 0
Address
Locks the Baud Rate and I
2
C address
Setting
Locks all settings from being saved
Filesystem
Locks all bitmaps and fonts
Command
Locks all commands, text can still be written
Display
Locks entire display, no new text can be displayed
13.3
Set and Save
Data Lock
Dec
Hex
254 203 245 160
FE CB F5 A0
Level
Level
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
1 byte, see data lock table
