Roland HP 3700 Owner's Manual page 25

+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
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