ViewSonic VT2755LED User Manual page 49

Other Information
5. Get-Function Listing
The PC can interrogate the LCD Monitor for specific information. The Get-Function packet
format consists of 9 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. The TV ID doesn't be supported by HDTV power
status on standby.
Identify command type,
Command Type "g" (0x67h) : Get Command
"r" (0x72h) : 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
Get-Function format:
Send (Command Type= "g")
Name Length
Byte Count 1 Byte
Bytes order 1
[NOTE] Get "Power STBY status" is the exception.
(Command Type= "g", Only for HDTV power status on standby)
Name Length
Byte Count 1 Byte
Bytes order 1
Reply: (Command Type= "r" or "-")
If the Command is valid, Command Type = "r"
Name Length
Byte Count 1 Byte
Bytes order 1
[NOTE] The reply for "Power STBY status" command is the exception.
It's 0x36 72 6C 30 30 30 0D ( 6rl000<CR>).
If the Command is valid, Command Type = "r", Only for HDTV power status on standby.
Name Length
Byte Count 1 Byte
Bytes order 1
If the Command is Not valid, Command Type= "-"
Name Length
Byte Count 1 Byte
Bytes order 1
ViewSonic
ID Command Command
Type
2 Byte 1 Byte 1 Byte
2~3 4 5
Command Command Value1
Type
1 Byte 1 Byte 1 Byte
2 3 4
ID Command Command
Type
2 Byte 1 Byte 1 Byte
2~3 4 5
Command Command Value1
Type
1 Byte 1 Byte 1 Byte
2 3 4
ID Command CR
Type
2 Byte 1 Byte 1 Byte
2~3 4 5
Value1 Value2
1 Byte 1 Byte
6 7
Value2 Value3
1 Byte 1 Byte
5 6
Value1 Value2
1 Byte 1 Byte
6 7
Value2 Value3
1 Byte 1 Byte
5 6
40
Value3 CR
1 Byte 1 Byte
8 9
CR
1 Byte
7
Value3 CR
1 Byte 1 Byte
8 9
CR
1 Byte
7
VT2755LED