Sony SRP-X500P manual Communication Format, Communication Protocol, RS-232C indicator

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SRP-X500P RS-232C Interface Manual

1.3 Communication Format

The communication format is described below.

Baud rate	: 38,400 bps
Communication mode	: Half-duplex start stop system (asynchronous)
Data length	: 8 bits
Parity bit	: odd
Stop bit	: 1 bit
Flow control	: None

1.4 Communication Protocol

The communication protocol is described below.

・When the SRP-X500P successfully receives a command from the computer, the SRP-X500P returns an ACK (Acknowledge). When the SRP-X500P fails to process a command due to a reception error or other problem, it returns a NAK (Not Acknowledge).

・When the computer sends a command, the computer waits for an ACK or NAK from the SRP-X500P. If the computer receives a response, it can send the next command.

・If the computer does not receive a response even after 1000 ms has elapsed after the transmission of the command, it means that the SRP-X500P did not receive the command normally. The computer should re-send the command.

・Transmission of the command by the computer should take place within 1000 ms. If the transmission is not completed within 1000 ms, a NAK should be returned without processing of the command.

・If the computer receives a NAK while transmitting the command, the computer should stop transmitting the command immediately.

1.5 RS-232C indicator

When SRP-X500P is communicating with the computer, the RS-232C indicator on the front panel is lit up.

1.6 Note on Value Settings

When setting up or operating the SRP-X500P through the RS-232C connector, be sure the parameters are within the value ranges specified in this protocol manual. The setting of values not defined in this manual may be a cause of an operational malfunction in the SRP-X500P or a communication malfunction between the SRP-X500P and the SRP-X500P Manager software. If this happens, the FACTORY PRESET command should be transmitted to restore the SRP-X500P parameters to their factory settings.

Afterwards, the parameters should be set to their appropriate values.

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Contents SRP-X500P Table of Contents About This Manual Connecting the SRP-X500P to a Computer3 4 Communication Format RS-232C indicatorCommunication Protocol Handshake Codes Communication Packet FormatBasic Control Commands 1 AV/RGB Input Select 0x43 0x53 0x45 0x4C ‘CSEL’Input Fader 0x43 0x50 0x4D 0x35 ‘CPM5’ Return packet formatInput Fader Request 0x52 0x50 0x4D 0x35 ‘RPM5’ Fader 1st-6th byteOutput Fader Request 0x52 0x50 0x4D 0x40 ‘RPM@’ Output Fader 0x43 0x50 0x4D 0x40 ‘CPM@’Fader 1st-8th byte Channel 1st byte Remote 1-6 Level 0x43 0x4C 0x56 0x4C ‘CLVL’Remote Level 2nd byte Master Volume Level 1st byte Master Volume UP 0x43 0x4C 0x56 0x2B ‘CLV+’Remote 1-6 Level 2nd-7th byte Master Volume Down 0x43 0x4C 0x56 0x2D ‘CLV-’ Master Volume Stop 0x43 0x4C 0x56 0x53 ‘CLVS’Muting 0x43 0x4D 0x55 0x54 ‘CMUT’ Muting 2nd byteInput Muting 1st byte Muting Parameter Request 0x52 0x4D 0x55 0x54 ‘RMUT’Speaker Output Muting 2nd byte Line Output Muting 3rd byte Master Muting 4th byteRemote Muting 5th byte MasterProjector ON/STANDBY 0x43 0x50 0x4A 0x50 ‘CPJP’ Projector Control Request 1st byteProjector ON/STANDBY Indicator 1st byte Scene Recall 0x43 0x52 0x43 0x4C ‘CRCL’Scene Recall Request 1st byte Scene Recall RequestScene Recall Parameter Request 0x52 0x52 0x43 0x4C ‘RRCL’ Scene No st byteIndex Request 0x52 0x50 0x4D 0x44 ‘RPMD’ Status Acquisition CommandsIndex Level Meter Parameter Request 0x52 0x4D 0x54 0x52 ‘RMTR’ Level Meter 1st-16th byte To acquire status of single item To acquire the status of all items Parameters Master Volume Level 9th byte Input Volume 3rd-8th byteRemote 1-6 Level 10th-15th byte Output Level 22nd-29th byte Input Level 16th-21st byteInput Muting 30th byte Output Muting 31st and 32nd byte Speaker Output MutingLine Output Muting Master Muting 33rd byteRF/AF Indicator 36th byte WL Indicator 37th byte+48V Switch 38th byte MIC 1-4 Trim 39th-42nd byteLine Trim 43rd byte REF Indicator 49th byteAV/RGB Trim 44th-48th byte Setup Channel FR Setup Status 54th and 55th byteFR 50th-53rd byte Setup Status AV/RGB Input Select 56th byteSpeaker Output Level 57th, 58th byte Speaker Output CH1/2 LevelIR Output Mode Indicator 59th byte Clip Indicator 77th byteLevel Meter 60th-75th byte Protection 76th byteTemperature 78th and 79th byte TemperatureProjector ON/STANDBY Indicator 80th byte EMG Muting 83rd byteScene No th byte Parallel Input 85th-94th byteLevel Parallel Output 95th and 96th byteMaster Volume Control 98th byte OutputFAN Motor 97th byte OUT6 OUT5 OUT4 OUT3 OUT2Gain Reduction 99th-108th byte AGC Gain ControlCompressor Gain Reduction Maintenance Information Commands Information SETUPDATE2005/01/23Information Request 0x52 0x50 0x4D 0x45 ‘RPME’ InformationMaintenance Information Read Write Maintenance Information Read WriteMaintenance Information Read only Maintenance Information Read onlyVersion Version Request 0x52 0x56 0x45 0x52 ‘RVER’Version Factory Preset 0x43 0x52 0x53 0x54 ‘CRST’

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