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512 CD/SACD Player Serial Communications Protocol 

Mark Levinson

 

 
 
 

7.17 VOLCTL 

Command 

Parameter 

Function 

Incoming Request 

Outgoing Response 

Comment 

VOLCTL 

  FIX 

Sets Volume to Fixed State 

VOLCTL:FIX\r 

VOLCTL:ACK\r 

 

 

  VAR 

Sets Volume to Variable State 

VOLCTL:VAR\r 

VOLCTL:ACK\r 

 

 ? 

Request Current Volume Control 
State VOLCTL:?\r 

VOLCTL:FIX\r 

 

  

 

VOLCTL:?\r  VOLCTL:VAR\r 

 

  

 

 

VOLCTL:NACK\r 

The player  is in Standby Mode so 
commands are ignored. 

 
 

8 Notification Factory Defaults 

 

Command 

Factory 
Default 
Setting 

Notes 

AREA N/A

 

Notification not available for this command 

CONTROL 

N/A 

Notification not available for this command 

DRAWER 

N/A 

Notification not available for this command 

DSPLY 

NO 

 

FPDWNUP 

N/A 

Notification not available for this command 

IRDWNUP 

N/A 

Notification not available for this command 

MSG 

NO 

 

MUTE 

N/A 

Notification not available for this command 

NOP 

N/A 

Notification not available for this command 

PWR 

YES 

 

REPEAT 

N/A 

Notification not available for this command 

SHUFFLE 

N/A 

Notification not available for this command 

TIME 

N/A 

Notification not available for this command 

TRACK 

N/A 

Notification not available for this command 

VOL 

N/A 

Notification not available for this command 

VOLCTL 

N/A 

Notification not available for this command 

 

18

 

Summary of Contents for Mark Levinson Protocol Series

Page 1: ...No 512 CD SACD Player Serial Protocol...

Page 2: ...r or an experienced radio TV technician for help Caution Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipmen...

Page 3: ...at of the Message Fields 7 5 2 Incoming Messages 8 5 3 Outgoing Messages 8 5 3 1 RSP Response to Command Request 8 5 3 2 NTF Notification of System Action 8 5 4 Example Request RQST 8 5 5 Example Resp...

Page 4: ...tring Field Parameter Separator for multiple parameters ACK Acknowledge AV Audio Video System generated response CMD Command CS Control Source EOP End of Packet HOST The device initiating or receiving...

Page 5: ...ystem ground The No 512 player receives control messages on pin 2 Data Receive and transmit status responses notifications and query data on pin 3 Data Transmit The connection cable between the No 512...

Page 6: ...hernet Control is defaulted to Auto Negotiate and recommends the end point to also be configured for Auto Negotiation However the No 512 is capable of 10 100 BaseT Half Full duplex flow control Pause...

Page 7: ...selected from the External Protocol Commands table to invoke the desired functionality PARAM The Parameter field specifies the selected parameter from the External Protocol Commands table to achieve...

Page 8: ...utgoing RSP will be generated as the result of an incoming RQST In most cases the response is an acknowledgement ACK unless the request is a query In the case of a query the RSP contains the requested...

Page 9: ...a system parameter using the External Protocol 6 RQST Error Responses and Examples The External Protocol responds with the following message parameters when an unexpected Incoming Request string is d...

Page 10: ...d during an AREA query Request Current AREA State AREA r AREA CD r See note below AREA r AREA SACD_2CHAN r AREA r AREA SACD_MULTI r AREA r AREA NODISC r AREA NACK r The player is in Standby mode so co...

Page 11: ...Brightness DSPLY SETFB r DSPLY ACK r Display set to Full brightness SET2 Sets Display Brightness to Setting 2 DSPLY SET2 r DSPLY ACK r Display set to Medium brightness SET1 Sets Display Brightness to...

Page 12: ...PDWNUP ACK r Also removes the player from Standby mode STANDBY FPDWNUP STANDBY r FPDWNUP ACK r Also removes the player from Standby mode FPDWNUP NACK r The player is in Standby Mode so commands except...

Page 13: ...K r TIME IRDWNUP TIME r IRDWNUP ACK r CD_SACD IRDWNUP CD_SACD r IRDWNUP ACK r MUTE IRDWNUP MUTE r IRDWNUP ACK r CLEAR IRDWNUP CLEAR r IRDWNUP ACK r PROGRAM IRDWNUP PROGRAM r IRDWNUP ACK r 0 IRDWNUP 0...

Page 14: ...DIS r MSG ACK r NTF Query Notification State MSG NTF r MSG EN r Notification is Enabled MSG NTF r MSG DIS r Notification is Disabled MSG NACK r The player is in Standby Mode so commands are ignored 7...

Page 15: ...ate PWR r PWR STANDBY r System in Standby EN Enables Notification PWR EN r PWR ACK r DIS Disables Notification PWR DIS r PWR ACK r NTF Query Notification State PWR NTF r PWR EN r Notification is Enabl...

Page 16: ...OFF r SHUFFLE r SHUFFLE ON r SHUFFLE NACK r The player is in Standby Mode so commands are ignored 7 14 TIME Command Parameter Function Incoming Request Outgoing Response Comment TIME TOT Time on Trac...

Page 17: ...6 VOL Command Parameter Function Incoming Request Outgoing Response Comment VOL 00 0 to 73 2 Sets Volume level between 00 0 and 73 2 VOL 71 1 r VOL ACK r Sets the Volume level to a selected value The...

Page 18: ...n not available for this command CONTROL N A Notification not available for this command DRAWER N A Notification not available for this command DSPLY NO FPDWNUP N A Notification not available for this...

Page 19: ......

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