MD-215 Hardware
Display UART Commands
C-9
The functional byte positions in the table below are indicated in red. The values (xx,yy) should always be sent
in HEX format (not decimal format). For example, if you would like to enter the number 64 (in decimal format),
you should enter the HEX equivalent, which is 0x40. The single byte that represents the MCC Command ID is
shown in green. The checksum is shown in blue. The other byte positions in black are defined as in the
“Message Format” shown at the beginning of this chapter.
NOTE
Due to firmware revisions, some commands listed below will not be supported by earlier units.
MCC Command
Syntax and Functionality
Details and Values
Brightness Control
Syntax: 07 FF 4D 43 43 03 23
81
xx yy
zz
Function Examples:
Example "255":07 FF 4D 43 43 03 23
81
46 46
F2
Query "?": 07 FF 4D 43 43 02 24
81
3F
3F
Reset "R": 07 FF 4D 43 43 02 24
81
52
2C
Reset "r": 07 FF 4D 43 43 02 24
81
72
0C
Increase "+": 07 FF 4D 43 43 02 24
81
2B
53
Decrease "-": 07 FF 4D 43 43 02 24
81
2D
51
Where xx = "0" to "F"
Where yy = "0" to "F"
Where zz = Calculated Checksum
Max Range: "0" "0" to "F" "F"
Default: "A" "0"
（
160
）
Contrast Control
Syntax: 07 FF 4D 43 43 04 22
82
ww xx yy
zz
Function Examples:
Example "A00": 07 FF 4D 43 43 04 22
82
41 30 30
DC
Example "a00": 07 FF 4D 43 43 04 22
82
61 30 30
BC
Query "?": 07 FF 4D 43 43 02 24
82
3F
3E
Reset "R": 07 FF 4D 43 43 02 24
82
52
2B
Reset "r": 07 FF 4D 43 43 02 24
82
72
0B
Increase "+": 07 FF 4D 43 43 02 24
82
2B
52
Decrease "-": 07 FF 4D 43 43 02 24
82
2D
50
Where ww = "a" to "A"
Where xx = "0" to "6"
Where yy = "0" to "F"
Where zz = Calculated Checksum
Max Range: "0" "0" to "6" "4"
Default: "0" "0"
Manual Clock Control
Syntax: 07 FF 4D 43 43 02 24
85
xx
zz
Function Examples:
Increase "+": 07 FF 4D 43 43 02 24
85
2B
4F
Decrease "-": 07 FF 4D 43 43 02 24
85
2D
4D
For VGA Mode only
Image Horizontal Position
Syntax: 07 FF 4D 43 43 02 24
86
xx
zz
Function Examples:
Increase "+": 07 FF 4D 43 43 02 24
86
2B
4E
Decrease "-": 07 FF 4D 43 43 02 24
86
2D
4C
For VGA Mode only
Image Vertical Position
Syntax: 07 FF 4D 43 43 02 24
87
xx
zz
Function Examples:
Increase "+": 07 FF 4D 43 43 02 24
87
2B
4D
Decrease "-": 07 FF 4D 43 43 02 24
87
2D
4B
For VGA Mode only
Auto Source
Syntax: 07 FF 4D 43 43 02 24
88
xx
zz
Function Examples:
Example "1": 07 FF 4D 43 43 02 24
88
31
46
Query "?": 07 FF 4D 43 43 02 24
88
3F
38
Reset "R": 07 FF 4D 43 43 02 24
88
52
25
Reset "r": 07 FF 4D 43 43 02 24
88
72
05
Where xx = “0” to “1”
Where zz = Calculated Checksum
Available function:
“0” = Disble
“1” = Enable
OSD Lock Mode
Syntax: 07 FF 4D 43 43 02 24
8D
xx
zz
Function Examples:
Example "1": 07 FF 4D 43 43 02 24
8D
31
41
Query "?": 07 FF 4D 43 43 02 24
8D
3F
33
Reset "R": 07 FF 4D 43 43 02 24
8D
52
20
Reset "r": 07 FF 4D 43 43 02 24
8D
72
00
Set "999": 07 FF 4D 43 43 05 21
8D
53 39 39 39
74
Where xx = “0” to “1”
Where zz = Calculated Checksum
Available function:
“0” = Normal
（
default
）
“1” = Menu Protection
“S” = Set password
（
default is
“000”
）
