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Rotel RA-11 / RA-12 V02

RS232 ASCII Controller Command List

The RA-11 and RA-12 V02 support an ASCII based RS232 protocol. The RS232

hardware does not support flow control so care needs to be take when sending and

receiving data to avoid packet loss.

The below protocol is effective starting with V02 units that have the rear panel RS232

connection. Earlier models with the rear panel mini USB connections do not support this

protocol.

All commands sent to the attached Rotel device must have a terminating “!” character.

Example Command: power_on!

Note: Do not include any spaces in the command, and do not include a carriage return

or line feed after the command, only the “!” terminating character.

Status information from the attached Rotel product with either have a terminating “!”

character or a byte count for variable length text data that may include a “!” in the

returned message. It is up to the sending/receiving control application to properly parse

and process the packets.

Note: The byte count only includes the text data and not the length or “,” character.

Note about Rotel Link RCD feature: The input that has been selected for the ROTEL LINK

RCD option in the setup menu of the RA-11/12 will affect the response string from the

unit for that input. If the input has been set as the Rotel Link RCD input, the response

string for that input will be the second string listed in the table (i.e. if COAX1 has been

set as the Rotel Link RCD input, the response string will be source=coax1_cd! rather than

the standard response string of source=coax1!).

Connection Settings

Baud Rate Parity Valid Data Bits Stop Bit Value

Handshaking Data Type

115200 N 8 1 None String

Communication Protocol

Command and response messages are included on the following pages.

Automatic display update information can be enabled/disabled using the

“display_update_auto” and “display_update_manual” commands.

Date Version Update Description

June 12, 2014 1.00 Original Specification

1 2 3 4 5 6 7

Rotel RA-11 / RA-12 V02 1

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Strany 1 - Rotel RA-11 / RA-12 V02

1 Rotel RA-11 / RA-12 V02 RS232 ASCII Controller Command List The RA-11 and RA-12 V02 support an ASCII based RS232 protocol. The RS232 hardware d

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2 In automatic mode each time the display changes the new display line(s) will be sent. In manual mode the display updates must be requested each

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3 RA-12 ASCII Command Description Unit Response fast_back! Fast Backward/Search Backward n/a random! Random Play Mode Toggle n/a repeat! Repea

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4 RA-12 ASCII Command Description Unit Response OTHER COMMANDS dimmer! Toggle display dimmer dimmer_#! dimmer_0! Set display to brightest setti

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5 Command: get_product_version! Description: Request the main CPU software version Return String: product_version=##,text Return Description: Rotel

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6 Command: get_bass! Description: Request current bass level Return String(s): bass=###! (+01-10, -01-10, 000) Return Description: Current tone con

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7 Command: get_volume! Description: Request current volume value Return String(s): volume=##! Return Description: 2 digit current volume level Examp

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Procházejte online nebo si stáhněte Uživatelský manuál pro Audio zesilovače Rotel RA-12. Rotel RA-11 / RA-12 V02 RS232 ASCII Controller Command List [en] Uživatelská příručka

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