Get-Function Listing - ViewSonic CD4233 Hardware Interface Spec And Software Protocols

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 Identify command type,
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
Byte 1 Byte 2 Byte
Count
Bytes 1 2~3
order
Reply: (Command Type="r" or "-")
If the Command is valid, Command Type ="r"
Name Length
Byte 1 Byte 2 Byte
Count
Bytes 1 2~3
order
If the Command is Not valid, Command Type="-"
Name Length
Byte 1 Byte 2 Byte
Count
Bytes 1 2~3
order
Example1: Get Brightness from TV-05 and this command is valid.
The Brightness value is 67.
Send (Hex Format)
Name Length
Hex 0x38 0x30
0x35
Reply(Hex Format)
Name Length
Hex 0x38 0x30
0x35
________________________________________________________________
May 28, 2007
Commercial Display RS-232 Protocol
ID Command Command
Type
1 Byte
4
ID Command Command
Type
1 Byte
4
ID Command
Type
1 Byte 1 Byte
4
ID Command Command
Type
0x67
ID Command Command
Type
0x72
7 / 16
Value1 Value2
1 Byte 1 Byte 1 Byte
5 6
Value1 Value2
1 Byte 1 Byte 1 Byte
5 6
CR
5
Value1 Value2
0x62 0x30 0x30
Value1 Value2
0x62 0x30 0x36
Commercial Display RS-232 Protocol
Revision 1.x
Value3 CR
1 Byte 1 Byte
7 8 9
Value3 CR
1 Byte 1 Byte
7 8 9
Value3 CR
0x30 0x0D
Value3 CR
0x37 0x0D