Roland TR-727 Owner's Manual page 51

3.
1.
e
End
of !il6
By
le
(EOF)
Descr
ip
t
Ion
a
nil
0000
b
0100 0001
c
0101 0101
d
1111 0111
Exclusive status
Roland
ID n
Operation code
End of
System Exclusi\
3.1.7 Communication error
Byte
a
nil 0000
b
0100 0001
c
0111 0001
d
1111 0111
3. 1. 8
Rejection
Byte
i
nil OOOD
b
0100 0001
c
0111 0000
d
nil
0111
CERR)
Descr
ip
t
ion
£xc
lus ive
s
ta tus
Roland
ID
«
Operation code
End of
System Exclusive
(RJC)
Descr
ip
t
ion
Exc lus ive
s
ta tus
Roland
ID H
Operation code
End
of
System Exclusiv
3.2
Sequence
of
communication
3.2.1 When the RQF
is
recognized
RQF Reques
a
F
le
Crecoived)
DAT
Data Ctransmitted)
CNT Contini
le
(transmitted)
PAS
Acknow
edge
(14
times)
(received)
DAT Data
Ctransmitted)
EOF
End
of
File (transmitted)
PAS Acknow edge
(received)
3.2.2 When the
WSF
is
recognized
WSF Want
to
Send
a
file (rece
i
ved)
RQF
Request
a
File (transmitted)
DAT Data (received)
CNT Continue (received)
PAS
Acknowledge
(transmi tted)
:
(U
times)
DAT Data
(received)
EOF End
of file
(received)
PAS
Acknowledge Ctransmi
tted)
3.2.3 When the
WSF
Is
received with error.
a
WSF
:
Want
to
Send
a
file
(received)
b
RJC
:
Rejection Ctransmitted)
(The
sequence will abort then return
to
normal operation.)
3. 2. 4
When
the
RQF
is
re 8d
wi
th
error.
a
RQF
:
Request
a
file (received)
b
RJC
:
Rejection (transmitted)
(The
sequence will abort then return
to
normal operation.)
3.2.5 When the
ERR
is
recognized.
DAT
CNT
ERR
DAT
CNT
Data
Continue
Communication err
Data (same block)
Continue
tie
rs is
rece ived
w
(transmitted)
(transmitted)
or
(received)
(transmitted)
(transmitted)
1th
errors.
DAT
:
Data (received)
ERR
:
Communication error (transmitted)
The unit will expect
to
receive
the
previous
DAT.