VIEWSONIC VS13915-1M - Manual (Page 57)

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46 ViewSonic VT3205LED
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6. Remote Control Pass-through mode
When PC sets the LCD monitor to Remote Control Pass through mode, the LCD shall send a
three bytes packet (followed by “CR”) in response to RCU button activation. Note, that in this
mode the RCU shall have no effect on the monitor function. For example: “+Volume” will not
change the volume in the LCD but only sends “+Volume” code to PC over the RS232 port.
RCU Pass-through Command description:
Length Total Byte of Message excluding “CR”
TV ID Identification for each of TV
Command Type Identify command type,
“p” (0x70h) : RCU Pass-through
Value[1~2] Two bytes ASCII that defines the value
CR 0x0D
RCU Pass-through Command Format:
Reply: (Command Type= “p”)
Name Length ID Command
Type
Value1 Value2 CR
Byte Count 1 Byte 2 Byte 1 Byte 1 Byte 1 Byte 1 Byte
Bytes order 1 2~3 4 5 6 7
Example1: User press “Menu” Key form RCU to TV-03 and RCU data pass-through
to Server, then server will receive “1A”.
Reply (Hex Format)
Name Length ID Command
Type
Value1 Value2 CR
Hex 0x36 0x30
0x33
0x70 0x31 0x41 0x0D
Example2: User press “5” Key form RCU to TV-07 and RCU data pass-through to Server,
then server will receive “05”.
Reply (Hex Format)
Name Length ID Command
Type
Value1 Value2 CR
Hex 0x36 0x30
0x36
0x70 0x30 0x35 0x0D