ViewSonic CDE6520-W User Guide - Page 47

11.3.2. Get-Function Listing The PC can interrogate the TV/DS 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 = 000 Get-Function description: Length: Total Byte of Message excluding "CR". TV/DS ID Identification for each of TV/DS (01~98; default is 01). Command Type Identify 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 ID Byte Count 1 Byte Bytes order 1 2 Byte 2~3 Command Type Command 1 Byte 1 Byte 4 5 Value1 1 Byte 6 Value2 1 Byte 7 NOTE: "Power STBY status" is the exception for VT2405LED-1 and VT3205LED. Value3 1 Byte 8 CR 1 Byte 9 Reply: (Command Type="r" or "-") If the Command is valid, Command Type ="r" Name Length Byte Count 1 Byte ID 2 Byte Command Type Command 1 Byte 1 Byte Bytes order 1 2~3 4 5 Value1 1 Byte 6 Value2 1 Byte 7 Value3 1 Byte 8 CR 1 Byte 9 NOTE: The reply for "Power STBY status" command is the exception for VT2405LED-1 and V3205LED. It's 0x36 72 6C 30 30 30 0D ( 6rl000). If the Command is Not valid, Command Type="-" Name Length Byte Count 1 Byte ID 2 Byte Command Type 1 Byte CR 1 Byte Bytes order 1 2~3 4 5 Example1: Get Brightness from TV-05 and this comm and is valid. The Brightness value is 67. Send (Hex Format) Name Hex Length 0x38 ID 0x30 0x35 Command Type Command 0x67 0x62 Value1 0x30 Value2 0x30 Value3 0x30 CR 0x0D 39