Resending Request - Hitachi 902 Service Manual

Resending Request (analyzer ↔ host)
(5)
Resending is requested if there is any abnormality in the contents of the text received
from the opposite side or to request the same text again for some reason.
(a) From analyzer to host
Analyzer
HOST
(b) From host to analyzer
Analyzer
HOST
(c) For resending with other than REP
Analyzer
HOST
Frame A
SUS
REC
Occurrence
of error
REP
ANY
Positive
response
SPE
Same text

Resending request

SPE
SPE
REP
Test selection
Occurrence
inquiry
of error
Suspection
request
ANY
END
A
Positive response
Analytical data
transfer
Sent from host when it wants analyzer to suspend communication for the
specified time. In this case, the analyzer judges that host could not receive
the text for some reason, and when communication is restored (MOR frame
is sent from host), the finally sent text, if it is an analytical data text, is resent
to restart communication.
Sent from host when it wants analyzer to suspend communication for the
specified time. In this case, the analyzer judges that host could receive the
analytical data text normally and the analytical data text is not resent after
reception of MOR frame.
Resending request
SPE
Test selection
directive
SPE
Same text
END
Analytical data
transfer
MOR
Description
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