ViewSonic CD4233 - Get-Function Listing

Commercial Display RS-232 Protocol
Revision 1.x
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May 28, 2007 7 / 16 Commercial Display RS-232 Protocol
3.3 Get-Function Listing
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet format
consists of 5 bytes which is similar to the Set-Function packet structure. Note that the “Value” byte
is always = 00.
Get-Function description:
Length:
Total Byte of Message excluding “CR”
TV ID
Identification for each of TV
Command
Type
Identify command type,
“g” (0x67h) : Get Command
Command:
Function command code: One byte ASCII code
Value[1~3]:
Three bytes ASCII that defines the value
CR
0x0D
Get-Function format
Send: (Command Type=”g”)
Name
Length
ID
Command
Type
Command
Value1
Value2
Value3
CR
Byte
Count
1 Byte
2 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
Bytes
order
1
2~3
4
5
6
7
8
9
Reply: (Command Type=”r” or “-”)
If the Command is valid, Command Type =”r”
Name
Length
ID
Command
Type
Command
Value1
Value2
Value3
CR
Byte
Count
1 Byte
2 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
1 Byte
Bytes
order
1
2~3
4
5
6
7
8
9
If the Command is Not valid, Command Type=”-“
Name
Length
ID
Command
Type
CR
Byte
Count
1 Byte
2 Byte
1 Byte
1 Byte
Bytes
order
1
2~3
4
5
Example1: Get Brightness from TV-05 and this command is valid.
The Brightness value is 67.
Send (Hex Format)
Name
Length
ID
Command
Type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x35
0x67
0x62
0x30
0x30
0x30
0x0D
Reply(Hex Format)
Name
Length
ID
Command
Type
Command
Value1
Value2
Value3
CR
Hex
0x38
0x30
0x35
0x72
0x62
0x30
0x36
0x37
0x0D