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# Rejection -
RJC
(4FH)
This
message
is sent oul
when
there
is a nced
to terminate
communication
by
overriding
(he current
message.
An
RIC
mM essare
will be triggered
when :
+a
WSID or ROD
message
has specified an ieyal data address
or
size,
-the device
is not
ready
for communication,
-an
iegal
number
of addresses
or data
has been detected.
«dala
transfer
has been
terminated
by an operator.
+a
communications
errar
has occurred.
An
ERR
message
may
be sent out by a device on cither side
of
the
interface.
Communication
must
be
terminated
immediately
when
cither side triggers an
ERR
message.
Exclusive
status
Manufacturer
ID (Roland)
Device
ID
Model
ID
Command
!D
End
of exclusive
# Example
of Message
Transactions
Data
transfer
from
device
(A)
to device (B).
{Want
to send data)
—————-——
A
[Acknowledge]
{Data
set]
—_———————
A
Acknowledge]
{Data sat]
————
[End of data]
a$$
[Acknowledge]
ir
A
[Acknowlecge)
Device (A) requests
and
receives
data
from
device (B)
{Request
data]
———————_—$—$_————____ a
I
[Data set]
[Acknowledge]
i
~<A
[Data
set]
{Acknowledge}
ee
$$
[End of data)
[Acknowledge]
——————-——-——
@Errer
occurs
while
device
(A) is recenmng
data
from
device
(BY
1} Data
transfer
from
device
(A) to device (B).
Device (B)
A
[Data
set]
[Acknowledge]
Oe
a
(Dain
set]
{Communication
error}
——————
(Error)
™
A
ne
menrnnomnonee
[Data
set}
(the same
data
[Acknowledge]
arcana
as above)
2) Device (8)
rejects
the data
re-transmitied,
and
quits data
transfer
Device ay]
Device (B)
lg
(Data
set]
or
————_—_—_——_—___———.
[Data
set}
[Acknowledge]
(Error)
x
[COMMUNICATION
BF TOT} manner
(Quit) <—_————_
[Rejection]}
3) Device
(A)
immediately
quits data transter.
Device (B)
lg
[Data
set]
[Acknowledge]
———
(Error)
x
-———__--._____.
[Data
set}
(Rejection}
-__
(Quit)
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