www.gpodisplay.com
5. Protocols Formats
by DSUB 9Pin RS232 Serial Port
STX : Start of Text ( 0xFX )
F = Command Start Sending, X = Number of Byte to Send
Example (0xF4) : Start Sending 4 Bytes of Packet Data
(Using for Parameter Reading or Virtual Remote Control)
(0xF5) : Start Sending 5 Bytes of Packet Data
(Using for Parameter Setting)
R/W : Read and Write Protocol
0x88 = Write (Command for Setting)
ID : SET ID Number (Set ID 0~99
0x00 = Wildcard (All Sets)
0x01 ( Set ID# 1 ), 0x02 ( Set ID# 2), 0x0C ( Set ID# 12 ), 0x10 ( Set ID# 16 ),
CON : Control Command
0xFE = Set Command Control, 0xFD = Set Virtual Remote Control
COM : COMMAND (ex, 0xFE : Power , 0x01 : Input source…)
Value : COMMAND VALUE (ex 0x00 : POWER OFF, 0x01 : POWER ON)
Acknowledgement
♦
Setting Command to Display (5bytes)
STX: 0xF4 (start sending 4 bytes of packet data )
R/W: Read and Write Protocol
0x89 = Read (Command for getting)
ID : SET ID Number (Set ID 0~99)
0x01 ( Set ID# 1 ), 0x02 ( Set ID# 2), 0x0C ( Set ID# 12 ), 0x10 ( Set ID# 16 )
CON : Control Command
0xFE = Set Command Control, 0xFD = Set Virtual Remote Control
COM : COMMAND (ex, 0xFE : Power , 0x01 : Input source…)
Acknowledgement
This is the format that the computer will send to the display to execute commands.
The format for this command transmission is as follows
STX
R/W
ID
CON
COM
Value
0xF5
0x88
Set ID
(0x00~0x63)
0xFE
0xXX
0xXX
♦
Read Command from Display(4bytes)
STX
R/W
ID
CON
COM
0xF4
0x89
Set ID
(0x00~0x63)
0xFE
0xXX
0xF1
Check Sum
0xF1
Value
