RS232 control of DD1535.
Contents
1. Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 RS232 adapter Telegram length R Link address R Link command R Link flag byte Check sum address always 0x01 R Link address OxC8 Amplifier m here SystemON always 0x02 sum of R Link command aster device 0x57 bytes 1 5 R Link flag byte gt see also note gt see command mod OxFF 0x03 below table appendix 1 0x01 0x03 0xC8 0x57 0x02 0x25 Byte 1 2 3 5 these bytes have the fixed values as shown in the table above for all R system master devices Byte 4 R Link command according to the table of RCII commands see RS_232_Command_Codes doc Byte 6 check sum byte1 byte2 byte3 byte4 byte5 modulo OxFF Note The R Link address 0xC8 is used for all standard amplifier commands There exist a few additional commands system commands for some special functions For these commands the address 0xC2 has to be used Format of the acknowledge ACK telegrams The R System master device will process each received command telegram and it will send an acknowledge telegram approx 25 35 ms after receiving the command The ACK telegram consists of 2 bytes Byte_1 is the RS232 address of the command telegram received before byte 1 of the command telegram 0x01 Byte_2 is the acknowledge byte If this byte is equal to the check sum of the command telegram byte6 of the commana then the command was received correctly2. 0x01 0x05 OxC2 0x64 Stat_Byte_1 Stat_Byte_2 Stat_Byte_3 Stat_Byte_4 Checksum ELA B evel E A IIRA OER AY HEADER 4 STATUS BYTES 4 CHK SUM 1 The 4 header bytes 0x01 0x05 0xC2 0x64 are constant The 4 status bytes are defined as follows Stat_Byte_1 bO Protection 1 Amplifier is in protection mode overload overheat bi Speaker_A 1 speaker A output is ON b2 Speaker_B 1 speaker B output is ON b3 b4 b5 b6 STANDBY 1 System is in STANDBY b7 ON 1 System is ON Stat_Byte_2 bO Listen Source 0 not defined 8 AUX 3 b1 0 15 1 CD 9 DVD b2 2 TUNER 10 STB b3 3 TAPE 1 11 VCR b4 Recording Source 4 TAPE 2 12 AUX AV 1 b5 0 15 5 TV Video 13 AUX AV 2 b6 6 AUX 1 14 DBR Digital Radio b7 7 AUX 2 15 not def future use Stat_Byte_3 bO LOUDness 1 Loudness is ON b1 FLAT 1 FLAT is ON Tone defeat b2 DirectStereo 1 High Quality stereo mode b3 b4 SurroundMode 0 15 0 Surnd 5 1 5 Disco 10 Church b5 1 Stereo 6 Hall 11 MCH Input b6 2 Mono 7 Opera b7 3 Mono 8 Arena 15 Surnd EX ES 4 Mono Il 9 Club 7 1 Stat_Byte_4 bO SourceFormat 0 4 0 analog 4 AAC b1 1 PCM b2 2 Dolby Digital b3 3 DTS b4 Decod
3. If byte 2 has a value different from the check sum of the command an error has occurred see table below Format of the ACK telegram Byte 1 Byte 2 RS232 address ACK byte check sum of command command correctly received 0x01 check sum 1 command ignored system busy check sum 2 command not executed Note If no ACK telegram is received within 35 milli seconds after sending a command there is either al hardware problem cable etc or the telegram is erroneous wrong address wrong check sum After the ACK telegram the master device is ready for the next command Special System Commands Beginning with version 1 31 the DD1535R automatically pushes the status information after it has changed Additionally the status can be requested by sending the command 0x64 Status_1 or 0x43 Status_2 to the RLink address 0xC2 but normally this should not be necessary We strongly recommend to keep the number of status requests low to avoid unnecessary RLink Bus load The information given is different for each device and has to be decoded and displayed individually For further information see the user manual Crestron T A Macro Responses of the DD1535R are as follows Status 1 The STATUS _1 is automatically pushed by the DD1535R when any contained information has changed or the command STATUS_1 was sent to the DD1535R It is answered by a 9 byte long status telegram having the following format
4. TA Technical Information 7 09 2005 RS232 control of DD1535 The surround decoder DD1535R with software version 1 31 or higher is compatible to be controlled by any P PA R master device control device with software version 1 60 connected to a control system having a RS232 serial output port PC CRESTRON home automation system etc through the RS232 R Link interface adapter The DD1535R cannot be controlled directly because it works as an add on for the master device All surround related commands are passed on by the master device to the surround decoder when in surround mode The DD1535R adds the Surround Control commands When the system is in surround mode it additionally takes over volume control and Loudness and Tone control The speaker output is tied to the speaker A For details about connecting and operating the adapter see the user manual of the adapter UM_RS232_Adapt doc Settings for the RS232 interface of the control device are as follows Baud rate 115 200 Data bits 8 Stop bits 1 Parity none Flow Control none T A RS_ 232 Protocol The R series devices use the standard T A RS232 command protocol as described in detail in the documents TA_RS232_protocol doc and RS_232_Command_Codes doc Format of the command telegrams A command telegram to the R system master device consists of 6 bytes The complete telegram should be sent without pauses between the bytes Example SYSTEM ON command
5. ingMode 0 10 0 None 1 Dolby Pro Logic II Movie Mode 2 Dolby Pro Logic Il Music Mode b5 3 Dolby Pro Logic II Matrix Mode 4 Dolby Pro Logic IIx Movie Mode b6 5 Dolby Pro Logic IIx Music Mode 6 Dolby Pro Logic IIx Matrix Mode 7 Dolby Pro Logic IIx EX compatible Mode b7 8 DTS Neo 6 Cinema Mode 9 DTS Neo 6 Music Mode 10 DTS ES Status 2 The STATUS _2 command to the DD1535R is answered by a 7 byte long status telegram giving information about the volume This information is pushed automatically after volume setting is completed Due to RLink Bus limitation this status is not updated while the Volume keys are still pressed but only after releasing them This might be improved in later releases Status_2 has the following format 0x01 0x05 OxC2 0x43 Status Byte_1 Status Byte _2 Checksum PALEE ore Vere T sre AAA SAES Mc wee AE EE HEADER 4 STATUS BYTES 2 CHK SUM 1 The 4 header bytes 0x01 0x05 0xC2 0x43 are constant The 2 status bytes are defined as follows Status_Byte_1 b0 Volume of main room b1 0 63 Stat_Byte_2 bO O Appendix 1 List of Master Amplifier commands Address 0xC8 Command Command toggle Remark Code HEX System ON 0x57 Switch the master device ON System Sta
6. ndby 0x77 Switch the system master and source devices to STANDBY System OFF Ox7A Switch the system completely OFF Volume Tone Control Performs 1 volume step VOL 0x00 VOL 0x20 Hint Repeat these commands for continuous volume increase decrease command repetition rate 100 110 ms LOUDness 0x2C X LOUDness ON 0x75 LOUDness OFF 0x55 FLAT 0x0C x FLAT ON 0x7B tone control defeat FLAT OFF 0x47 tone control on Speaker Control Switches the speaker outputs insequence ON and OFF SPKR 0x13 x A gt B gt A B gt OFF l Hint better use the discrete Speaker_A Speaker_B ON OFF commands Speaker_A ON 0x68 Speaker A output ON Speaker_A OFF 0x48 Speaker A output OFF Surround control Surround EX ES 0x6F Surround EX ES mode Surround 5 1 0x6D Surround 5 1 mode Stereo 0x4D Stereo mode Mono 0x5D Mono mode Mono 0x3D use left channel for Mono Mono Il 0x53 use right channel for Mono Disco 0x63 Soundfield Disco Hall 0x76 Soundfield Hall Opera Ox7E Soundfield Opera Arena 0x71 Soundfield Arena Club 0x69 Soundfield Club Church 0x79 Soundfield Church MCH Input 0x67 Use Multichannel Input if assigned to active source SURND 0x37 xX toggle between Surround and Preamp Mode Stereo HQ 0x70 switch to Preamp Mode Hint All Surround control keys but PRE can be used to switch the DD1535 from Standby
7. to On or from Preamp Mode to Surround Mode Revision history 01 09 2005 release 02 09 2005 replaced PRE code 0x0e by Stereo HQ 0x70 in Appendix 1 List of Master commands 07 09 2005 added STATUS_BYTE_4 DecodingMode Message DTS ES for value 10 without the DTS ES operation is falsely indicated as DTS PLIIx supported by DD1535R V1 32 and later
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