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Roland HP 2700 - Message Transaction Examples

Roland HP 2700
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+Example
of
Message
Transactions
@Data
transfer
from
device
(A)
to
device
(8).
{Want
to
send
data]
————————
[Acknowledge]
(Data
set}
near
—_————_
[Acknowledge]
{Data
set]
nn
od
[Acknowledge]
[End
of
data]
i
Acknowledge]
@Device
(A)
requests
and
receives
data
from
device
(B).
(Request
data)
—————$—$—————_
A
enenererenrnccoenens
[Hata
set}
(Acknowledge)
[Data
sat]
[Acknowledge]
<<?
[End
of
cata)
[Acknowledge]
———--————————
@Error
occurs
while
device
(A)
is
receiving
data
from
device
(B).
1)
Data
transfer
from
device
(A)
to
device
(8).
lit
{Data
set]
{Acknowledge}
stent
ER
(Error)
x
1
——---——-———
[Data
set}
(Communication
error]
———————-
A
—____—___—_—-——
[Data
set]
(the
same
data
[Acknowledge]
nena
as
above)
2)
Device
(B)
rejects
the
data
re
—transmitied,
and
quits
data
transfer.
<————________.
[Data
set}
[Acknowledge]
tt
I
(Error)
x
[Data
set]
[Communication
error
—————————_—pa-
(Quit)
—__——_—_—_—_———_
[Rejection]
3)
Device
(A)
immediately
quits
date
transfer.
——
{Data
set]
[Acknowledge]
—_—_—
(Error)
x
A
[Data
sot]
[Rejection]
-
(Quit)
Roland
Exclusive
Messages
23

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