Viewsonic CDE4200-L 사용자 설명서
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3. Protocol
3.1 Set-Function Listing
The PC can control the display for specific actions. The Set-Function command
The PC can control the display for specific actions. The Set-Function command
allows you to control the display behavior in a remote sit through the RS232 port.
The Set-Function packet format consists of 9 bytes.
Set-Function description:
Length:
Total Byte of Message excluding “CR”
ID:
Identification for each of display
If we want to set all settings, ID can use “99” to achieve, and it will not
have Reply command on this function.
The ID can be set via the OSD menu for each set.
Command Type: Identify command type,
“s” (0x73h) : Set Command
“+” (0x2Bh) : Valid command Reply
“-” (0x2Dh) : Invalid command Reply
Command:
Function command code: One byte ASCII code
Value[1~3]:
Three bytes ASCII that defines the value
CR:
0x0D
Set-Function format:
Send: (Command Type= “s”)
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= “+” or “-”)
Name
Length
ID
Command Type
CR
Byte Count 1 Byte 2 Byte
1 Byte
1 Byte
Bytes order
1
2~3
4
5
[NOTE] The reply for “Power on” command is the exception. It’s 0x322B0D (
2+<CR>).
Example1: Set Brightness as 76 for TV-02 and this command is valid
Send (Hex Format)
Name
Length
ID
Command Type Command Value1 Value2 Value3
CR
Hex
0x38
0x30
0x32
0x73
0x24
0x30
0x37
0x36
0x0D
Reply (Hex Format)
Name
Length
ID
Command Type
CR
Hex
0x34
0x30
0x32
0x2B
0x0D