Denon POA-A1HD Control Protocol

DENON POA-A1HD control protocol

Application model : POA-A1HD

Application terminal: RS-232C

Connector specification

Ⅰ. RS-232C

Connector type: DB-9pin female type, slave straight connection (DCE type)

( 1pin : GND , 2pin : TxD , 3pin : RxD , 5pin : Common(GND) , 4,6,7,8,9pin : NC )

Communication format:

Synchronous system : Tone step synchronization
Communication system : A half duplex

Communication speed : 9600bps
Character length : 8 bits

Parity control : None
Start bit : 1 bit

Stop bit : 1 bit
Communication procedure : Non procedural

Communication data length : 135 bytes (maximum)

Ver. 1.0.7

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Protocol specification

The following three data forms are defined.
COMMAND : The message sent to a system(POA) from a controller(Touch Panel etc.)
A command to a system is given from a controller.

EVENT : The message sent to a controller (Touch Panel etc.) from a system (POA)
The result is sent, when a system is operated directly and a state changes.

*The form of EVENT presupposes that it is the same as that of COMMAND.

**Refer to the following table for the contents of COMMAND and EVENT.

RESPONSE : The message sent to a controller (Touch Panel etc.) from a system (POA)
if the ‘request command’ (COMMAND+?+CR(0x0D)) has came from a controller.

The RESPONSE should be sent within 200ms
*The form of RESPONSE presupposes that it is the same as that of EVENT.

of receiving the COMMAND.

Basic specification: The command by ASCII CODE, parameter expression

*ASCII CODE which can be used is from 0x20 to 0x7F: the alphabet and the number of 0-9, and space (0x20), some signs,

AND carriage return (0x0D) --- It is used only as a pause sign.

Command structure: COMMAND + PARAMETER + CR (0x0D)

COMMAND :ASCII CODE of 2 characters
PA :Power AMP（POA）Control
PARAMETER ：ASCII CODE (up to 25 characters)

EX.PWON ：Power On

Others

A) COMMAND is receivable also during transmission of EVENT.

B) The RESPONSE should be sent as opposed to the request command by all the commands with which an EVENT

exists not need to the another request commands.

C) Please set the input channel after setting the power amp.

D) Please Power on it after making the CONTROL switch of POA-A1HD EXTERNAL

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COMMAND and PARAMETER list

COMMAND PARAMETER

PA PWON POA POWER ON/STANDBY change
PWSTBY
PW? Return PW Status

INL1RCA
INL1XLR
INL2OFF

INL2XLR
INL3OFF
INL3RCA
INL3XLR
INL4OFF
INL4RCA
INL4XLR
INL5OFF
INL5RCA
INL5XLR
INR1OFF
INR1RCA
INR1XLR
INR2OFF
INR2RCA
INR2XLR
INR3OFF
INR3RCA
INR3XLR
INR4OFF
INR4RCA
INR4XLR
INR5OFF
INR5RCA

INL1OFF Input Channel L* Setting

INL2RCA

INR5XLR

Input Channel R* Setting

function Example

PAPWON<CR>
PAPWSTBY<CR>
PAPW?<CR>
PAINL1OFF<CR>
PAINL1RCA<CR>
PAINL1XLR<CR>
PAINL2OFF<CR>
PAINL2RCA<CR>
PAINL2XLR<CR>
PAINL3OFF<CR>
PAINL3RCA<CR>
PAINL3XLR<CR>
PAINL4OFF<CR>
PAINL4RCA<CR>
PAINL4XLR<CR>
PAINL5OFF<CR>
PAINL5RCA<CR>
PAINL5XLR<CR>
PAINR1OFF<CR>
PAINR1RCA<CR>
PAINR1XLR<CR>
PAINR2OFF<CR>
PAINR2RCA<CR>
PAINR2XLR<CR>
PAINR3OFF<CR>
PAINR3RCA<CR>
PAINR3XLR<CR>
PAINR4OFF<CR>
PAINR4RCA<CR>
PAINR4XLR<CR>
PAINR5OFF<CR>
PAINL2OFF<CR>
PAINL2RCA<CR>

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