8 msg, 9 mute, 10 nop – Mark Levinson 512 User Manual
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512 CD/SACD Player Serial Communications Protocol
Mark Levinson
7.8 MSG
Command
Parameter
Function
Incoming Request
Outgoing Response
Comment
MSG
Up to 12 ASCII
Character MSG
Display MSG on Front Panel
MSG:HELLO\r
MSG:ACK\r
No colon, no lower case
CLEAR
Clear displayed MSG and return
to normal display
MSG:CLEAR\r MSG:ACK\r
?
Query Front Panel display
MSG:?\r
MSG:ON\r
Up to 16 characters can be returned.
EN
Enables Notification of MSG State
Changes
MSG:EN\r MSG:ACK\r
When Notifications are enabled, they
are sent approximately once per
/second while playing.
DIS
Disables Notification of MSG
State Changes
MSG: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.
7.9 MUTE
Command
Parameter
Function
Incoming Request
Outgoing Response
Comment
MUTE
ON
Mute is set ON
MUTE:ON\r
MUTE:ACK\r
OFF
Mute is set OFF
MUTE:OFF\r
MUTE:ACK\r
?
Request Current MUTE state
MUTE:?\r
MUTE:ON\r
Mute State is ON
MUTE:?\r
MUTE:OFF\r
Mute State is OFF
MUTE:NACK\r
The player is in Standby Mode so
commands are ignored.
7.10 NOP
Command
Parameter
Function
Incoming Request
Outgoing Response
Comment
NOP
NOP
No operation is performed NOP:NOP\r
NOP:ACK\r
Used for testing communication.
The command responds if the player
is in Standby mode. However, the
command does NOT change the
Standby mode state.
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