Magnetar UDP800, User Manual

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RS-232 Control Protocol
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RS-232 Control Protocol
UDP-800 has a RS-232 interface with wired remote control. The interface pins are described as follows:
Pins 2 3 5
Signals Transmit data
(TXD)
Receive data (RXD) Ground (GND)
This pin configuration allows connection of a personal computer to the player by a straight-through 9-pin RS-232
serial cable, and a serial terminal (e.g. Hyper Terminal) is operated for communication. Please don’t connect the
player to your personal computer t hrough any “Null - Modem” cable.
To understand how to create connections, please refer to the document on remote control system.
Communication Configuration
Baud Rate 115200
Stop Bit 1
Data Bit 8
Parity Bit N/A
Flow Control N/A
Command Structure
Each command starts with “#” (ASCII code is 0x23), followed by one 3 -character command code. It ends with a
line feed upon carriage return (ASCII code is 0x0d 0x0a).
The command structure is exemplified as follows:
<Command> = <start symbol><command code><end symbol>
<Start symbol of command> = # (ASCII 0x23)
<Command code> = <byte><byte><byte>
<Parameters>=specific commands
<End symbol of command> = carriage return (ASCII 0x0d) [line feed (ASCII 0x0a)]
Response Structure
The player will execute the command and send a response back after receiving it. Character string of the response
is “ack”.