Lexicon Blu Ray Disc Player BD-30 - Manual (Page 84)

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Lexicon
Appendix
Lexicon BD-30 Blu-ray Disc Player
RS-232 Control Protocol
The RS-232C port is configured as a DCE device using a female
9-pin D-Sub type connector.
RS-232 Pin Configuration:
The pin out of the BD-30 RS-232C port is as follows:
Pin Signal
2 TXD
3 RXD
5 GND
This pin configuration allows a PC running a serial terminal
program (such as Hyper Terminal) to communicate with the player
using a straight-through DB9 9-pin RS-232 serial cable. Do NOT
use a “Null-Modem” type cable for PC connection. For connection
to a remote control system, please refer to the documentation that
comes with the remote control system.
Communication Settings:
The RS-232 control port of the Lexicon BD-30 uses the following
communications settings:
Baud Rate: 9600
Data Bits: 8
Parity: None
Stop Bit: 1
Flow Control: None
Command Structure:
Each command starts with a # sign (ASCII 0x23), followed by a
3-character command code. If there are any parameters for the
command, the parameters are given in text format, separated by
a space (ASCII 0x20) from the command code. The # character
(ASCII 0x23) must never appear in the parameters. A carriage
return (ASCII 0x0d) indicates the end of the command. Each
command must not exceed 25 bytes including the start of
command and end of command bytes.
The illustration of the command structure is as follows:
<Command> = <Start of Command><CommandCode>
[<sp><Parameters>]<End of Command>
<Start of Command> = #, ASCII 0x23
<Command Code> = <byte><byte><byte>
<sp> = space, ASCII 0x20
<Parameters> = command-specific
<End of Command> = CR, ASCII 0x0d
Response Structure:
Upon receiving a command, the player shall try to execute the
command and send back a response. The response starts with
an “@” sign (ASCII 0x23), followed by a result code, either “OK”
or “ER”. If there are any parameters or additional message, the
parameters or message is given in text format, separated by a
space (ASCII 0x20) from the result code. The @ character (ASCII
0x40) must never appear in the parameters or message. A carriage
return (ASCII 0x0d) indicates the end of response. Each response
must not exceed 25 bytes including the start of response and the
end of response bytes.