JVC DLA-RS67 Instructions page 71

Command Format
The command between this unit and the computer consists of "Header", "Unit ID", "Command", "Data" and "End".
Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte)
0
Header
This binary code indicates the start of communication.
Binary Code
21 Operating command
3F Reference command PC " This unit
40 Response command
06 ACK
Unit ID
This is a code that specifies the unit. The binary code is fixed at "8901".
Command and data
Operating command and data (binary code)
Command Type
0000 Connection Check whether communication is
check enabled between this unit and the
PC during standby.
5057 Power During standby
supply 31: Turns on the power
When power is on
30: Turns off the power (Standby
mode)
4950 Input When power is on
36: HDMI 1
37: HDMI 2
5243 Remote Sends the same code as the
control supplied remote control.
0
End
This code indicates the end of communication. The binary code is fixed at "0A".
Type
PC " This unit
This unit " PC
This unit " PC (returns to PC after the command is accepted without
error)
Description
"Remote Control
Code"p. 72
Description
Operating command and data (binary code)
Command Type
5057 Power During standby or when power is
supply on
30: Standby mode
31: When power is on
32: In the Cool-down mode
34: When error occurs on this unit
4950 Input When power is on
36: HDMI 1
37: HDMI 2
Description
71