Denon DN-V300 Operating Instructions Manual page 56

ENGLISH
Serial Remote Control (DN-V300 only)
2 Commands can be sent to the DVD player and the status
requested and sent to the host via RS-232C.
This DVD player can be controlled by a PC. Connect the player and
a serial port on the PC with a 9-pin RS-232C straight cable. To
control this DVD player by a PC, set the RS-232C switch on the
rear panel to RS-232C.
2 RS-232C Pin assignments (DVD player)
Pin no.
1
2
3
4
5
6
7
8
9
2 Communication conditions
Configure the serial port of the PC as shown below.
Bit Rate
Data length
Parity
Stop bit
56
2 Basic format
Signal
–
2 System commands
TXD
RXD
–
GND
–
CTS
RTS
–
9,600 bps
8 bits
None
1 bit
• Command format
[group, command, parameter list]\r
• Response code format
0 : No error
x : Error code x
Example 1:
Player receives: [PC, RC, 66]\r
Player sends: [PC, RC, 0]\r
When the external controller receives the response this
implies that the player has verified the received message
(syntax), and the command will be executed.
Example 2:
Player receives : [PC, PlayT, 16]\r
Player sends : [PC, PlayT, 2]\r
If an internal error occurs and the command cannot be
executed, an error message (Error code 2 : Invalid
parameter) will be send.
Communication between a DVD controller and the DVD player
consist of 3 different types of information:
• External control commands
• External control status
• Asynchronous responses
The messages between the DVD and the DVD controller look
like:
"[group, command, parameter list]\r"
A group, command and parameter-list between square-
brackets, followed by a carriage return character (\r).
The parameter-list exists of comma separated parameters, and
are case sensitive.
When the player receives a message from the external
controller, it will be acknowledged. This acknowledgment will
be done in 2 different ways.
For external control commands, the acknowledgment will look
like:
• Group: Group specified in the received message
(PC)
• Command: Command specified in the received
message
• Parameter-list: ReturnValue
ReturnValue can have one of the following values
0 : No error
x : Error code x