Protocol

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Rotel RA-1592

RS232 / IP ASCII Controller Command List

The RA-1592 supports an ASCII based RS232 and IP protocol. The RS232

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

receiving data to avoid packet loss.

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-1592 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!).

Note about PC-USB Transport control codes: The basic transport functions

(Play/Pause/Track etc) for PC-USB will ONLY function when the RA-1592 is set for USB

2.0 mode.

RS232 Connection Settings

Baud Rate Parity Valid Data Bits Stop Bit Value

Handshaking Data Type

115200 N 8 1 None String

Date Version Update Description

February 5, 2016 1.00 Original Specification

September 16, 2016 1.01 Corrected volume scale from 1 - 86 to 1 - 96

Summary of content (8 pages)

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Rotel RA-1592 RS232 / IP ASCII Controller Command List Date February 5, 2016 September 16, 2016 Version 1.00 1.01 Update Description Original Specification Corrected volume scale from 1 - 86 to 1 - 96 The RA-1592 supports an ASCII based RS232 and IP protocol. The RS232 hardware does not support flow control so care needs to be take when sending and receiving data to avoid packet loss. All commands sent to the attached Rotel device must have a terminating “!” character.
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IP Control Settings The RA-1592 will accept and respond to IP control commands if the product is connected to a local network and has a valid IP address. Commands will be accepted via TCP port 9590, and the unit will send responses back via the same port. The command and response format is identical to the serial commands. Communication Protocol Command and response messages are included on the following pages.
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RA-1592 ASCII phono! usb! pc_usb! Command Description Source Phono Source Front USB Source PC-USB bal_xlr! Source XLR bluetooth! Source Bluetooth rcd! Source Rotel CD SOURCE CONTROL COMMANDS play! Play Source stop! Stop Source pause! Pause Source track_fwd! Track Forward/Tune Up track_back! Track Backward/Tune Down fast_fwd! Fast Forward/Search Forward fast_back! Fast Backward/Search Backward MENU CONTROL COMMANDS menu! Display the Menu exit! Exit Key up! Cursor Up down! Cursor Down left! Cursor Lef
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RA-1592 ASCII Command Description bass_000! Set Bass to 0 bass_+10! Set Bass to +10 treble_up! Treble Up treble_down! Treble Down treble_-10! Set Treble to -10 treble_000! Set Treble to 0 treble_+10! Set Treble to +10 BALANCE CONTROL COMMANDS balance_right! Balance Right balance_left! Balance Left balance_L15! Set Balance to Max Left balance_000! Set Balance to 0 balance_R15! Set Balance to Max Right SPEAKER OUTPUT COMMANDS speaker_a! Toggle Speaker A Output speaker_b! Toggle Speaker B Output OTHER COMMANDS
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Command: Description: Return String: Return Description: Example: Command: Description: Return String: Return Description: Example: Command: Description: Return String: Return Description: Example: Command: Description: Return String: Return Description: Example: get_display1! Request display line #1 to be sent display1=##,text Current display line 1, must include 2 digit length of text string at beginning followed by "," and text string (no terminating character) display1=20, Sample Text get_display2! Req
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Command: Description: Return Description: Example: get_current_source! Request current source source=analog_cd! / source=cd! / source=coax1! / source=coax1_cd! / source=coax2! / source=coax2_cd! / source=coax3! / source=coax3_cd! / source=opt1! / source=opt2! / source=opt3! / source=tuner! / source=phono! / source=usb! / source=pc_usb! / source=aux! / source=bluetooth! / source=bal_xlr! / source=bal_xlr_cd! Current source source=pc_usb! Command: Description: Return String(s): Return Description: Example:
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Command: Description: Return String(s): Return Description: Example: Command: Description: get_current_speaker! Request active speaker outputs speaker=off! / speaker=a! / speaker=b! / speaker=a_b! Active speaker outputs speaker=a! Return Description: Example: get_current_freq! Request current frequency for digital source input freq=off! / freq=32! / freq=44.1! / freq=48! / freq=88.2! / freq=96! / freq=176.
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Command: Description: Return String(s): Return Description: Example: get_power_mode! Request current power mode. (Quick or Normal) power_mode=normal! / power_mode=quick! Current power mode power_mode=quick! Section 3: Special Character Mapping Certain characters on the RA-1592 display may be represented by a combination of 2-3 hex bytes in the feedback string provided by the unit. Refer to the chart below for a mapping of the different characters.