RS232 Protocol

ManualsBrandsRotel ManualsAudio EquipmentSurround Processor

Rotel RSP-1582

RS232 / IP ASCII Controller Command List

The RSP-1582 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.

RS232 Connection Settings

Baud Rate Parity Valid Data Bits Stop Bit Value

Handshaking Data Type

115200 N 8 1 None String

IP Control Settings

The RSP-1582 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 9596, and the unit will send responses back via

the same port.

Date Version Update Description

October 23, 2015 1.00 Original Specification

July 12, 2016 1.10

Revised to reflect updates to RS232 feedback and

commands changed with main SW V2.59/2.60

January 9, 2017 1.20

Revised to reflect updated feedback for stereo DSP

mode changed with main SW V2.81

January 16, 2017 1.30

Add note regarding volume control changes with

HDMI 2.0a update.

Mar 6, 2017 1.40

Added missing Surround/Center Back level trim

commands.

Summary of content (5 pages)

PAGE 1
Rotel RSP-1582 RS232 / IP ASCII Controller Command List Date October 23, 2015 Version 1.00 July 12, 2016 1.10 January 9, 2017 1.20 January 16, 2017 1.30 Mar 6, 2017 1.40 Update Description Original Specification Revised to reflect updates to RS232 feedback and commands changed with main SW V2.59/2.60 Revised to reflect updated feedback for stereo DSP mode changed with main SW V2.81 Add note regarding volume control changes with HDMI 2.0a update.
PAGE 2
NOTE: If the Front USB input is selected IP control response will be noticeably slower while on this input. Therefore, it is recommended if the Front USB input will be utilized in a system to use RS232 for control instead of IP. Important Changes to Volume Setting With the HDMI 2.0a upgrade to the RSP-1582, the volume format has changed from a dB format of -90.0dB (min) to 00.0 (max) to a flat numeric range of 00 (min) to 96 (max).
PAGE 3
Section 1: Control Command List RSP-1582 ASCII Command Description POWER & VOLUME COMMANDS power_on! Power On power_off! Power Off power_toggle! Power Toggle volume_up! Volume Up volume_down! Volume Down Set Volume to level n volume_-nn.ndb! n = 90.0 (min) – 00.0 (max) Applies to SW V2.xx units only. Set Volume to level n volume_nn! n = 00 (min) – 96 (max) Applies to SW 5.xx units only.
PAGE 4
RSP-1582 ASCII up! down! left! right! enter! DSP MODE COMMANDS 2channel! 3channel! 5channel! 7channel! prologic_music! prologic_movie! prologic_game! prologic_iiz! neo6_music! neo6_cinema! bypass! surround_next! LEVEL TRIM COMMANDS subwoofer_up! subwoofer_down! center_up! center_down! surround_right_up! surround_right_down! surround_left_up! surround_left_down! center_back_right_up! center_back_right_down! center_back_left_up! center_back_left_down! OTHER COMMANDS dimmer! dimmer_0! dimmer_-n! dimmer_+n! fac
PAGE 5
Section 2: Feedback Request Command List Command: Description: Return String(s): Return Description: Example: Command: Description: get_current_power! Request current power status power=on! / power=standby! Current power status power=on! Return Description: Example: get_current_source! Request current source source=cd! / source=coax1! / source=coax1! / source=coax2! / source=coax3! / source=opt1! / source=opt2! / source=opt3! / source=tuner! / source=phono! / source=usb! / source=pc_usb! / source=video1!