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2.
Transmitted data
O
When
Instrument Table 2
is
selected
System
Realtime
messages
•
Active
Sensing
Status
FEH
*
This
message
is
transmitted constantly
at intervals
of
approximately
250
msec.
System
Exclusive
messages
SlalUS
Data
bytes
FOH
iiH
ddH
eeH
F7H
FOH
:
System
Exclusive
Message
Status
iiH
=
manufacturer ID:
41H
(
65
)
This
ID number
identifies
the
manufacturer of
the unit
which
transmitted the
Exclusive message.
Roland
is
41H.
ddH
eeH
=
data:
OOH
-
7FH
{
-
127
)
F7H
:
EOX
(End
Of
Exclusive)
For
details refer to
"About Roland
Exclusive
Messages'",
and
sections
3
and
following.
Bytes
Explanation
FOH
Exclusive
status
41H
manufacturer
ID
(Roland)
Dev
device
ID
42H
model ID (GS)
IIH
command
ID (RQl)
aaH
address
MSB
bbH
address
ccH
address
LSB
ssH
size
MSB
ttH
size
uuH
size
LSB
sum
check-sum
F7H
EOX
(End
Of
Exclusive)
•
Data Set
1
DT1
(12H)
This
message
transmits the actual
data.
For
details
of
the
parameters
transmitted
and
received,
refer to
the
Parameter
Address
Map.
O
When
Instrument Table
1
is
selected
3.
Exclusive
Communication
The
P-55
is
able
to
use Exclusive
messages
to
send and
receive
parameter
settings
etc.
The model
IDs
which
the
P-55 can
recognize
will
depend on
the Instrument
Table
setting.
When
Instrument
Table
1
is
selected;
model
ID
= 63H
CP-55)
When
Instrument
Table
2
is
selected:
model
ID
= 42H
(GS)
As
an
exception,
when
performing
a
Bulk
Dump
operation,
data
will
be
transmitted
as
DTI
with
model ID =
63H
(P-55), regardless
of
the
Instrument Table
setting.
Also,
System
Exclusive
mssages
related
to
Mode
settings
(GS
Reset, Exit
GS,
GM
System On,
GM
System
OfO
will
be
received regardless
of
the
Instrument
Table
settings.
Bytes
Explanation
FOH
Exclusive
status
4IH
manufacturer
ID
(Roland)
Dev
device
ID
63H
model ID
{P-55)
12H
command
ID
(DTI)
aaH
address
MSB
bbH
address
ccH
address
LSB
eeH
data
ffH
data
sum
check-sum
F7H
EOX
(End
Of
Exclusive)
O
When
Instrument Table 2
is
selected
One-way
communication
•
Request
Data
1
RQl
(11
H)
This
message
is
used
to
request parameters
from
the P-55.
The
P-55
will
never
transmit
this
message.
In
response
to
this
message,
the
P-55
will transmit
the
parameters
for
the requested
address as
a Data
Set
1
(DTI)
message.
<>
When
Instrument Table
1
is
selected
Bytes
Explanation
FOH
Exclusive
status
41H
manufacturer
ID
(Roland)
Dev
device
ID
63H
model
ID
(P-55)
UH
command
ID (RQl)
aaH
address
MSB
bbH
address
ccH
address
LSB
ssH
size
MSB
ttH
size
uuH
sizeLSB
sum
check-sum
F7H
EOX
(End
Of
Exclusive)
Bytes
Explanation
FOH
Exclusive
status
41H
manufacturer
ID
(Roland)
Dev
device
ID
42H
model
ID
(GS)
12H
command ID
(DTI)
aaH
address
MSB
bbH
address
ccH
address
LSB
eeH
data
ffH
data
sum
check-sum
F7H
EOX
(End
Of
Exclusive)
As
an
exception,
when
performing a
Bulk
Dump
operation, data
will
be
transmitted
as
DTI
with
model
ID
= 63H
CP-55),
even
if
Instrument
Table
2
is
selected.
O
About
the Device
ID
Exclusive
Messages
do
not contain parameters such as
"MIDI
Channel",
For
this
reason,
Roland
exclusive
messages
contain
a Device
ID number
which
allows
two
or
more
devices
to
be
controlled independently.
For
devices (such as the P-55)
which
respond
to
two
or
more
basic channels, the
device
number
can be
set
over a range of
OOH
-
IFH.
Exclusive
messages
with
a
device
ID
of
7FH
(broadcast) are received regardless
of
the
device
ID
setting.
50
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