ViewSonic IFP9850 IFP9850 User Guide - Page 95

Protocol, Set-Function Listing

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Protocol Set-Function Listing The PC can control the Display for specific actions. The Set-Function command allows you to control the Display behavior at a remote site through the RS232 port. The Set-Function packet format consists of 9 bytes. Set-Function Description: Length: Total Byte of Message excluding "CR" LFD ID Identification for each of Display (01~98; default is 01) ID "99" means to apply the set command for all connected displays. Under such circumstances, only ID#1 display has to reply. The LFD ID can be set via the OSD menu for each Display. 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 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 Reply: (Command Type="+" or "-") Name Byte Count Bytes order Length 1 Byte 1 ID 2 Byte 2~3 Command Type 1 Byte 4 CR 1 Byte 5 NOTE: When PC applies command to all displays (ID=99), only the #1 set needs to reply by the name of ID=1. 95

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95
Protocol
Set-Func°on Lis°ng
The PC can control the Display for specific ac°ons. The Set-Func°on command
allows you to control the Display behavior at a remote site through the RS232 port.
The Set-Func°on packet format consists of 9 bytes.
Set-Func°on Descrip°on:
Length:
Total Byte of Message excluding “CR”
LFD ID
Identification for each of Display (01~98; default is 01)
ID “99” means to apply the set command for all connected
displays. Under such circumstances, only ID#1 display has to
reply.
The LFD ID can be set via the OSD menu for each Display.
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-Func°on 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:
When PC applies command to all displays (ID=99), only the #1 set needs
to reply by the name of ID=1.