Roland RS 232C MP3 Player User Manual


 
r
AR-3000 RS-232C Reference -7
3) Setting commands
These commands are used to set AR-3000 parameters from the external device.
4) Request commands
This command causes the AR-3000 to output the status of its current settings. When a Request
command is transmitted to the AR-3000, the AR-3000 will transmit the requested contents as
the Setting output command. In this case, an ACK will not be returned. However for the AC and
AQ commands, an ACK will be output. If the command was not correct, an ER command will be
returned.
5) Reply commands
Reply commands are necessary for communication control, for example to notify that a
command was received correctly.
4.2 Details of Commands Sent from the External Device (Computer) to the AR-3000
Commands compatible with the AR-2000 are marked as shown below (relevant symbol appears
before name).
= Commands for the AR-2000/AR-3000 (those common to both the AR-2000 and AR-3000)
> Commands for the AR-3000 (commands newly added with the AR-3000)
< Commands for the AR-2000 (for the AR-2000; includes items that cannot be used with the
AR-3000)
4.2.1 Control Commands
Playback Commands
= PA(PhrAse)
Function: Specifying the playback phrase
Syntax: stxPA: ****, ****, ....., **** ;
a a a
a Phrase number
Example) PA:A1,A3,B5;
Specify A0001 and A0003 and B0005 as the playback phrases.
The specified phrases are consecutively played back from the left.
Note: A maximum of 100 phrases can be specified in one line.
Be sure that the phrase numbers are registered (i.e., for which data exists).
= PE (PausE)
Function: Playback pause / Restart playback
Syntax: stxPE;
Note: When this command is sent during phrase playback, the AR-3000 stops playback and
enters the paused state. Sending the PE command again releases the pause, and
playback resumes from where it was paused. When operation is paused with the PE
command, the AR-3000 outputs the elapsed time from the start of the phrase to the
point where paused. (Refer to AE command 4 . 4 . 1 )
Caution:The command is not compatible with the Dual Mono.
Phrases other than audio phrases cannot be specified.