ViewSonic IFP9850 IFP9850 User Guide - Page 101

Get-Function Listing, Get-Func°on Descrip°on, Get-Func°on Format, Send: Command Type=g

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Get-Function Listing The PC can interrogate the LFD 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 Command Type Command Value1 Value2 Value3 CR Byte 1 Byte 2 Count Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte Bytes 1 2~3 4 order 5 6 7 8 9 Reply: (Command Type="r" or "-") If the Command is valid, Command Type = "r" Name Length ID Byte 1 Byte 2 Count Byte Bytes 1 2~3 order Command Type 1 Byte 4 Command Value1 Value2 Value3 CR 1 Byte 1 Byte 1 Byte 1 Byte 1 Byte 5 6 7 8 9 If the Command is NOT valid, Command Type = "-" Name Byte Count Bytes order Length 1 Byte 1 ID 2 Byte 2~3 Command Type 1 Byte 4 CR 1 Byte 5 101

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101
Get-Func°on Lis°ng
The PC can interrogate the LFD for specific informa°on. The Get-Func°on packet
format consists of 9 bytes which is similar to the Set-Func°on packet structure.
Note that the “Value” byte is always = 000.
Get-Func°on Descrip°on:
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-Func°on 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