Teac CD-RW901SL User manual

TASCAM CD-RW901
CONTROL I/O connector
RS-232C Protocol Specification
Ver.1.00
August 2006
TEAC Corporation

TASCAMCD-RW901RS-232CProtocolSpecification
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1. Overview
The CD-RW901's REMOTE connector can be used to control the CD-RW901 from a computer or
other external device. In this document, the CD-RW901 is referred to as the "controlled device,"
and the external device that controls it is referred to as the "external controller."
2. Specifications
2.1. Electrical specifications
Conforms to standard JIS X-5101 (equivalent to former JIS C-6361 and EIA RS-232C)
(Not compatible with the RS-422A used in professional VTR units)
Impedance at receiver When measured with an applied voltage of between ±3 and 15V, the DC
resistance is between 3KΩand 7KΩ.
Total load capacitance is less than 2500pF
Open circuit voltage at transmitter Less than 25V
Open circuit voltage at receiver Less than 2V
Signal voltage When the open circuit voltage at the receiver is 0V, the signal voltage is
between ±5V and ±15V for a load impedance of between 3K and 7KΩ.
Signal discrimination Logical “1” Less than -3V
Logical “0” More than +3V
2.2. Communication format
Circuit type 3-wire, half-duplex
Transmission type Digital binary serial
Data speed (baud rate) 4800/9600/19200/38400 bit/sec
Character length 7/8 bit
Parity bit Odd/Even/None
Stop bit 1/2 bit
(Data speed, character length, parity bit, and stop bit settings are made on the CD-RW901.)
2.3. Connector pin-out
Connector D-sub 9-pin female (metric thread)
Terminal pin-out and input/output signals
Pin no. In/Out Signal name Description
1 - NC Not connected
2 In Rx Data Data received at this pin *1
3 Out Tx Data Data transmitted from this pin
4 Out (Reserved) Reserved
5 - GND Ground
6 In (Reserved) Reserved
7 Out RTS Request To Send (output "request to transmit") *2
8 In CTS Clear To Send (input "ready to receive") *2
9 - NC Not connected
*1：A voltage that satisfies the RS-232C specification must be applied to Rx Data.
*2：RTS/CTS is loopback-connected within the controlled device. If using RTS/CTS control,
consider the design of the external controller.

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2
3
5
RXD
TXD
RTS
CTS
GND
RXD
TXD
RTS
CTS
GND
7
8
Controlled device (CD-RW901) External controller

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3. Command format
3.1. Command format overview
The command format is as follows.
Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 … Byte n
LF ID Command Data 1 Data 2 Data 3 Data 4 … CR
Commands begin with a "line feed (LF)," end with a "carriage return (CR)," and are based on the ASCII
format.
The type following the LF is the machine ID. The machine ID is described later.
Commands are expressed by two ASCII bytes.
The byte string following the command expresses the data, and is between 0 bytes (for a command that
has no data) and a maximum of 98 bytes. For details on the data, refer to the detailed explanation for
each command. For commands that use 0--9 and A--F as data values, uppercase characters are used
for A--F.
Example commands
Example 1: Transmitting a PLAY command to a controlled device of ID=0
When the controlled device is in Stop or Ready mode, this command will initiate playback on the
controlled device.
The PLAY command is [12], and is transmitted as follows.
ID Command
ASCII LF 0 1 2 CR
HEX 0Ah 30h 31h 32h 0Dh
Example 2: Telling a controlled device of ID=0 to perform a direct search for track 123
The command "DIRECT TRACK SEARCH PRESET [23]" is transmitted to perform this action.
The data bytes consist of ASCII in two-byte units.
For the "DIRECT TRACK SEARCH PRESET" command, the track number is specified as
follows.
Data 1 Tens digit of the specified track number
Data 2 Ones digit of the specified track number
Data 3 Thousands digit of the specified track number
Data 4 Hundreds digit of the specified track number
Thus, the transmitted command will be as follows.
ID Command Data：track 123
ASCII LF 0 2 3 2 3 0 1 CR
HEX 0Ah 30h 32h 33h 32h 33h 30h 31h 0Dh
Example 3: Writing a title to track 23 of a controlled device whose ID=0
The command "TEXT PRESET [29]" is transmitted to perform this action.
This command allows up to eighty single-byte characters to be transmitted.
For example, the command to write a title "Test" would be as follows.
ID Command Track 23 Title：Test
ASCII LF 0 2 9 2 3 0 1 T e s t CR
HEX 0Ah 30h 32h 39h 32h 33h 30h 30h 54h 65h 73h 74h 0Dh
3.2. Machine ID
The CD-RW901 uses Machine ID=0 to receive commands and transmit returns.
Commands and returns using Machine ID=0 also exist, and these operations are described within this
document.
If a command with an ID other than Machine ID=0 is received, that command is ignored.

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If an unsupported command is received, the CD-RW901 will transmit ILLEGAL [F2].

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3.3. List of commands
A list of commands is given below.
Control/Preset/Sense Command Return Command
0F INFORMATION REQUEST 8F INFORMATION RETURN
10 STOP
12 PLAY
13 RECORD
14 READY
16 SHUTTLE
18 TRAY
1A TRACK/INDEX SKIP
1D CALL
20 AUTO CUE LEVEL PRESET A0 AUTO CUE LEVEL RETURN
21 AUTO TRACK LEVEL PRESET A1 AUTO TRACK LEVEL RETURN
23 DIRECT TRACK SEARCH PRESET
25 PITCH DATA PRESET A5 PITCH DATA RETURN
26 AUTO TRACK TIME PRESET A6 AUTO TRACK TIME RETURN
28 SYNC REC LEVEL PRESET A8 SYNC REC LEVEL RETURN
29 TEXT PRESET A9 TEXT PRESET ACKNOWLEDGE
2C TIME SEARCH PRESET
2D KEY CONTROL DATA PRESET AD KEY CONTROL DATA RETURN
2E FADE IN/OUT TIME PRESET AE FADE IN/OUT TIME RETURN
2F DIGITAL VOLUME DATA PRESET AF DIGITAL VOLUME DATA RETURN
30 AUTO CUE SELECT B0 AUTO CUE SELECT RETURN
31 AUTO TRACK SELECT B1 AUTO TRACK RETURN
32 EOM TRACK TIME SELECT B2 EOM TRACK TIME RETURN
33 EOM DISC TIME SELECT B3 EOM DISC TIME RETURN
35 PITCH CONTROL SELECT B5 PITCH CONTROL SELECT RETURN
36 AUTO READY SELECT B6 AUTO READY SELECT RETURN
37 REPEAT SELECT B7 REPEAT SELECT RETURN
38 SYNC REC SELECT B8 SYNC REC SELECT RETURN
3A INCR PLAY SELECT BA INCR PLAY SELECT RETURN
3D KEY CONTROL SELECT BD KEY CONTROL SELECT RETURN
4C REMOTE/LOCAL SELECT CC REMOTE/LOCAL SELECT RETURN
4E PLAY MODE SENSE CE PLAY MODE RETURN
50 MECHA STATUS SENSE D0 MECHA STATUS RETURN
53 ISRC SENSE D3 ISRC RETURN
55 TRACK No. SENSE D5 TRACK No. STATUS RETURN
56 DISC STATUS SENSE D6 DISC STATUS RETURN
57 CURRENT TRACK INFORMATION
SENSE
D7 CURRENT TRACK INFORMATION
RETURN
58 CURRENT TRACK TIME SENSE D8 CURRENT TRACK TIME RETURN
59 TEXT SENSE D9 TEXT RETURN
5D TOTAL TRACK No./TOTAL TIME SENSE DD TOTAL TRACK No./TOTAL TIME
RETURN
5E PGM TOTAL TRACK No./TOTAL TIME
SENSE
DE PGM TOTAL TRACK No./TOTAL TIME
RETURN
5F KEYBOARD TYPE SENSE DF KEYBOARD TYPE RETURN

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F0 ERROR SENSE REQUEST
F1 CAUTION SENSE REQUEST
F2 ILLEGAL STATUS
F4 POWER ON STATUS
F6 CHANGE STATUS
78 ERROR SENSE F8 ERROR SENSE RETURN
79 CAUTION SENSE F9 CAUTION SENSE RETURN

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3.4. Command sequence
In most cases the controlled device will not send an ACK in response to transport control or data preset
commands sent from the external controller.
The controlled device will send back a return command in response to data sense commands that
request a data value specified on the controlled device.
When the status of the controlled device changes, such as from Stop to Play mode, or when an error etc.
occurs, the controlled device will send a command indicating this to the external controller.
Examples of the command sequence are given below.
You must leave an interval of at least 20 ms between commands.
Example 1: Controlling the transport of the controlled device
This example describes the Play operation.
When the controlled device receives the PLAY command and enters Play mode, it will transmit
a CHANGED STATUS command.
ACK is not transmitted for the PLAY command.
Command
External controller Controlled device State of controlled device
Stopped
PLAY ->
<- CHANGED STATUS Transmit when starting Play
Example 2: Presetting data
This example describes setting the AUTO CUE LEVEL.
When the controlled device receives the AUTO CUE LEVEL PRESET (Preset) command, it will
set its AUTO CUE LEVEL.
ACK is not transmitted for this command.
Command
External controller Controlled device State of controlled device
AUTO CUE LEVEL
PRESET (Preset -54dB) -> AUTO CUE LEVEL set to
-54dB
Example 3: Obtaining specified data
This example describes obtaining the currently-set AUTO CUE LEVEL.
When the controlled device receives the AUTO CUE LEVEL PRESET (Sense) command, it will
return the currently-set AUTO CUE LEVEL.
Command
External controller Controlled device State of controlled device
AUTO CUE LEVEL
PRESET (Sense) ->
<- AUTO CUE LEVEL
RETURN
Example 4: Checking the status of the controlled device, and performing the next operation
When the operating status of the controlled device changes, it will transmit CHANGED
STATUS. By using CHANGED STATUS as a trigger for sending MECHA STATUS SENSE, the
new operating status can be determined.
This example shows how to check the record-ready status of the controlled device and then
initiate recording..
Command
External controller Controlled device State of controlled device
Stopped
RECORD (Record Ready) ->

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<- CHANGED STATUS Transmitted when entering
record-ready status
MECHA STATUS SENSE ->
<- MECHA STATUS
RETURN
Returns record-ready status
RECORD (Record) ->
<- CHANGES STATUS Transmitted when entering
record status
3.5. Command details
The commands, data, and machine IDs described here are characters (ASCII).
A command is two character bytes, a machine ID is one character byte, and each item of data is an
individual character byte.
The CD-RW901 can use the following track numbers and group numbers. However if a number not
existing on the disc is specified, it will be considered an invalid command.
Track number (audio CD) maximum 99
Track number (MP3 CD) maximum 999
INFORMATION REQUEST
Requests the controlled device to return information such as the software version.
Command 0F
Machine ID 0
Data none
Return INFORMATION RETURN [8F]
STOP
Puts the controlled device in STOP mode, and defeats input monitor mode.
Command 10
Machine ID 0
Data none
Return none
PLAY
Puts the controlled device in PLAY mode, or in RECORD mode if it is in record-ready mode.
Command 12
Machine ID 0
Data none
Return none
RECORD
Puts the controlled device in RECORD-READY mode. If it is currently recording, assigns a track. If
the state is currently No Disc, puts the controlled device in Input Monitor mode.
Command 13
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 1 Record Ready Puts the device in record-ready mode.
0 2 Track Mark Assigns a track during recording.
0 3 Input Monitor Puts the device in Input Monitor mode while stopped.
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return none

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READY
Puts the controlled device in PLAY-READY mode or RECORD-READY mode.
Command 14
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 invalid The command will be ignored in the case of this data.
ILLEGAL will not be transmitted.
0 1 Ready On
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return none

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SHUTTLE
Puts the controlled device in SHUTTLE mode.
SHUTTLE mode will be maintained until a command such as STOP, PLAY, or READY is received.
Command 16
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Shuttle
Forward
Shuttles in the forward direction.
0 1 Shuttle
Reverse
Shuttles in the backward direction.
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return none
TRAY
Opens or closes the tray of the controlled device.
Command 18
Machine ID 0
Data none
Return none
SKIP
Causes the controlled device to skip tracks.
After skipping, the device will maintain the mode in which it was when the operation began.
Command 1A
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Track Skip Next Skips to the next track.
0 1 Track Skip
Previous
If the current position is at the beginning of a track,
skips to the beginning of the previous track. If the
current position is not at the beginning of a track, skips
to the beginning of the current track..
1 0 Index Skip Next Skips to the next index.
1 1 Index Skip
Previous
If the current position is index 2 or higher, skips to the
beginning of the previous index.
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return none
CALL
Causes the controlled device to locate to the call point and enter playback-ready mode.
Command 1D
Machine ID 0
Data none
Return none

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AUTO CUE LEVEL PRESET
Sets the Auto Cue Level of the controlled device.
A return command is returned only if Sense [FF] is specified.
The Auto Cue Mode setting is made using the command "AUTO CUE SELECT [30]."
Command 20
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Preset –24dB
0 1 Preset –30dB
0 2 Preset –36dB
0 3 Preset –42dB
0 4 Preset –48dB
0 5 Preset –54dB
0 6 Preset –60dB
0 7 Preset –66dB
0 8 Preset –72dB
F F Sense Requests that the current preset level be returned.
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return AUTO CUE LEVEL RETURN [A0]
AUTO TRACK LEVEL PRESET
Sets the Auto Track Level of the controlled device.
A return command is returned only if Sense [FF] is specified.
The Auto Track Mode setting is made using the command "AUTO TRACK SELECT [31]."
Command 21
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Preset –24dB
0 1 Preset –30dB
0 2 Preset –36dB
0 3 Preset –42dB
0 4 Preset –48dB
0 5 Preset –54dB
0 6 Preset –60dB
0 7 Preset –66dB
0 8 Preset –72dB
F F Sense Requests that the current preset level be returned.
・ If data other than the above is returned, the CD-RW901 will transmit ILLEGAL [F2].
Return AUTO TRACK LEVEL RETURN [A1]

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DIRECT TRACK SEARCH PRESET
Searches for the specified track number.
When this command is received while in STOP mode or PLAY mode, the controlled device will enter
PLAY mode after searching. If the controlled device had been in any other mode when searching
began, it will remain in that mode after searching.
Command 23
Machine ID 0
Data 4 bytes
Description Remarks
Data 1 Tens digit of the
track number
Data 2 Ones digit of the
track number
Data 3 Thousands digit of
the track number
Data 4 Hundreds digit of
the track number
Track number
Example) 2301: track 123
・ If the specified track number does not exist on the disc, the CD-RW901 will transmit ILLEGAL
[F2].
Return none
PITCH CONTROL DATA PRESET
Specifies the playback pitch of the controlled device in % units.
The adjustable range is ±16.0%.
This can be set independently of the step that is specified by the CD-RW901's PITCH STEP? setting.
A return command is returned only if Sense [FF] is specified..
If Sense [FF] is specified, the data is two bytes.
The pitch control mode setting is made by the command "PITCH CONTROL SELECT [35]."
Command 25
Machine ID 0
Data 4 bytes or 2 bytes
Data
1
Data
2
Data
3
Data
4
Description Remarks
0
1
Positive value
Negative value
N2 N3 N1
Preset % N1：Tens digit, N2：Ones digit, N3：First decimal
place
Example) 2311：-12.3%
F F … Sense Requests that the currently preset pitch be
returned.
・ If data other than the above or data outside the specified operating range is received, the
CD-RW901 will transmit ILLEGAL [F2].
Return PITCH DATA RETURN [A5]
AUTO TRACK TIME PRESET
Specifies the Auto Track Time setting of the controlled device.
The range that can be specified is 1 to 10 minutes.
A return command is returned only if Sense [FF] is specified.
The Auto Track Mode setting is made by the command "AUTO TRACK SELECT [31]."
Command 26
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks

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N1 N2 Minutes N1：Tens digit of minutes, N2：Ones digit of minutes
F F Sense Requests that the currently preset time be returned.
・ If data outside the specified range is received, the controlled device will return ILLEGAL[F2].
Return AUTO TRACK TIME RETURN [A6]

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SYNC REC LEVEL PRESET
Sets the Sync Rec Level of the controlled device.
A return command is returned only if Sense [FF] is specified.
The SYNC REC MODE setting is made by the command "SYNC REC SELECT [38]."
Command 28
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Preset –24dB
0 1 Preset –30dB
0 2 Preset –36dB
0 3 Preset –42dB
0 4 Preset –48dB
0 5 Preset –54dB
0 6 Preset –60dB
0 7 Preset –66dB
0 8 Preset –72dB
F F Sense Requests that the currently preset level be returned.
・ If data outside the above range is received, the CD-RW901 will return ILLEGAL [F2].
Return SYNC REC LEVEL RETURN [A8]
TEXT PRESET
Specifies a title for the controlled device of up to 80 single-byte alphabetical or katakana characters.
To obtain the assigned title, transmit the command "TITLE SENSE [59]."
Command 29
Machine ID 0
Data 4 bytes～84 Bytes
Description Remarks
Data 1 Tens digit of
specified number
Data 2 Ones digit of
specified number
Data 3 Thousands digit of
specified number
Data 4 Hundreds digit of
specified number
0000
0001 – 0099
Specify the disc title
Specify a track title
Data 5 – Data
84
Title Single-byte alphanumeric characters
・ If a track number not existing on the disc is specified, the CD-RW901 will transmit ILLEGAL
[F2].
・ The title is between 0 bytes and 80 bytes. The characters up to the last one before CR will be
used as the specified title.
Return TEXT PRESET ACKNOWLEDGE [A9]

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TIME SEARCH PRESET
Searches for the specified track number and time.
If this command is received while in STOP mode or PLAY mode, the device will enter PLAY mode
following the search. If the device was in any other mode, it will remain in that mode following the
search.
Command 2C
Machine ID 0
Data 12 bytes
Description Remarks
Data 1 Tens digit of track
number
Data 2 Ones digit of track
number
Data 3 Thousands digit of
track number
Data 4 Hundreds digit of
track number
Data 5 Tens digit of
minutes
Data 6 Ones digit of
minutes
Data 7 Hundreds digit of
minutes
Data 8 Thousands digit of
minutes
Data 9 Tens digit of
seconds
Data 10 Ones digit of
seconds
Data 11 0 Set to 0
Data 12 0 Set to 0
・ If a track number not existing on the disc is specified, the CD-RW901 will transmit ILLEGAL
[F2].
・ If data outside the operating range is received, the CD-RW901 will transmit ILLEGAL [F2].
Return none
KEY CONTROL DATA PRESET
Specifies the playback key of controlled device.
A range of ±6 semitones can be specified.
A return command is returned only if Sense [FF] is specified.
The KEY CONTROL MODE setting is made using the command "KEY CONTROL SELECT [3D]."
Command 2D
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0
1
Key Up
Key Down
0 – 6 Key Change Semitone units
F F Sense Requests that the preset content be returned.
・ If data outside the operating range is received, the CD-RW901 will transmit ILLEGAL [F2].
Return KEY CONTROL DATA RETURN [AD]

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FADE IN/OUT TIME PRESET
Specifies the fade-in/out time used for the fade-in/out recording function of the controlled device.
A range of 1 to 30 seconds can be specified.
A return command is returned only if Sense [FF] is specified.
If Sense [FF] is specified, the data is two bytes.
Command 2E
Machine ID 0
Data 4 bytes or 2 bytes
Data
1
Data
2
Data
3
Data
4
Description Remarks
0 0
1
IN Time
OUT Time
N1 N2 Preset Time N1：Tens digit, N2：Ones digit
F F … Sense Requests that the preset content be returned.
・ If data outside the specified operating range is received, the controlled device will transmit
ILLEGAL[F2].
Return FADE IN/OUT TIME RETURN [AE]
DIGITAL VOLUME DATA PRESET
Specifies the digital volume of the controlled device.
The range that can be set is -54dB～+18dB and -∞dB.
You can set the -54.0dB～-24.0dB range is 6.0dB steps, the -24.0dB～-12.0dB range in 4.0dB steps,
the -12.0dB～-6.0dB range is 2.0dB steps, the -6.0dB～+6.0dB range in 0.5dB steps, and the +6.0dB
～+18.0dB range in 1.0dB steps.
A return command is returned only if Sense [FF] is specified.
If Sense [FF] is specified, the data is two bytes.
Command 2F
Machine ID 0
Data 4 bytes or 2 bytes
Data
1
Data
2
Data
3
Data
4
Description Remarks
0
1
Positive value
Negative value
N2 N3 N1
Preset Level N1 ：Tens digit, N2：Ones digit, N3：First
decimal place
Example) 6011: -16.0dB
A A A A Preset -∞dB
F F … Sense Requests that the preset content be returned
・ If data outside the specified operating range is received, the controlled device will transmit
ILLEGAL[F2]
Return DIGITAL VOLUME DATA RETURN [AF]
AUTO CUE SELECT
Specifies the auto cue mode setting of the controlled device.
A return command is returned only if Sense [FF] is specified.
The AUTO CUE LEVEL setting is made by the command "AUTO CUE LEVEL PRESET [20]."
Command 30
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Auto Cue Off
0 1 Auto Cue On
F F Sense Requests that the preset content be returned.

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・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return AUTO CUE SELECT RETURN [B0]

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AUTO TRACK SELECT
Specifies the auto track mode of the controlled device.
A return command is returned only if Sense [FF] is specified.
Command 31
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 Auto Track Off
0 1 Auto Track On
(Level)
Executes auto track according to the specified AUTO
TRACK LEVEL.
0 2 Auto Track On
(Digital
Direct)
Executes auto track according to the track data within the
S/P DIF signal.
0 3 Auto Track On
(Time)
Executes auto track according to the specified AUTO
TRACK TIME.
F F Sense Requests that the preset content be returned.
・ If data other than the above is received, the CD-RW901 will transmit ILLEGAL [F2].
Return AUTO TRACK RETURN [B1]
EOM TRACK TIME PRESET
Specifies the time (in seconds) at which the tally signal will be output by the EOM (End Of Message)
function which outputs a tally signal when the track nears its end.
The range is 1 to 99 seconds, or OFF.
A return command is returned only if data [FF] is specified.
Command 32
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 EOM Track
Off
N1 N2 Number of
seconds
N1：Tens digit of seconds, N2：Ones digit of seconds
F F Sense Requests that the preset content be returned.
・ If data outside the range specified above is received, the controlled device will transmit
ILLEGAL[F2].
Return EOM TRACK TIME RETURN [B2]
EOM DISC TIME PRESET
Specifies the time (in seconds) at which the tally signal will be output by the EOM (End Of Message)
function which outputs a tally signal when the disc nears its end.
The range is 1 to 99 seconds, or OFF.
A return command is returned only if data [FF] is specified.
Command 33
Machine ID 0
Data 2 bytes
Data 1 Data 2 Description Remarks
0 0 EOM Disc Off
N1 N2 Number of
seconds
N1：Tens digit of seconds, N2：Ones digit of seconds
F F Sense Requests that the preset content be returned.
・ If data outside the range specified above is received, the controlled device will transmit
ILLEGAL[F2].
Return EOM DISK TIME RETURN [B3]

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