30
Table 20: 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
8.3
Set and Save
Data Lock
Dec
Hex
ASCII
254 203 245 160
FE CB F5 A0
■
╦
?
á
Level
Level
Level
v5.0
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.
6.9
Miscellaneous
9.1
Write
Customer Data
Dec
Hex
ASCII
254 52
FE 34
■
4
Data
Data
Data
v5.0
Saves a user defined block of data to non-volatile memory. Useful for storing display information for later use.
Data
Byte [16]
User defined data.
9.2
Read
Customer Data
Dec
Hex
ASCII
254 53
FE 35
■
5
v5.0
Reads data previously written to non-volatile memory. Data is only changed when written, surviving power cycles.
Response
Byte [16]
Previously saved user defined data.
9.3
Read Version
Number
Dec
Hex
ASCII
254 54
FE 36
■
6
v5.0
Causes display to respond with its firmware version number. Test.
Response
Byte
Convert to hexadecimal to view major and minor revision numbers.
9.4
Read
Module Type
Dec
Hex
ASCII
254 55
FE 37
■
7
v5.0
Causes display to respond with its module number.
Response
Byte
Module number, see Sample Module Type Responses
for a partial list.
Table 21: Sample Module Type Responses
2B
LK204-7T-1U
2C
LK204-7T-USB
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LK204-7T-1U-USB-WB-WB
功能描述:LCD字符显示模块与配件 20x4 Wht Txt Blu B/G 7key 3 LED indicator
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
LK204-7T-1U-USB-WB-WB-E
功能描述:LCD字符显示模块与配件 20x4 Wht Txt Blu B/G Ext. Volt 7 key
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
LK204-7T-1U-USB-YG
功能描述:LCD字符显示模块与配件 20x4 Blk Txt Y/G B/G 7key 3 LED indicator
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功能描述:LCD字符显示模块与配件 20x4 Wht Txt Blu B/G Ext. Temp 7 key
RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk
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LK204-7T-1U-WB-LV-E
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