Hitachi 902 - Resending Request

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(5) Resending Request (analyzer ↔ host)
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
(b) From host to analyzer
(c) For resending with other than REP
Frame A Description
SUS 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.
REC 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.
ANY
REP
SPE
SPE
Analyzer
HOST
Same text
Occurrence
of error
Resending request
Positive
response
SPE
SPE
SPE
REP
Resending request
Test selection
directive
Occurrence
of error
Test selection
inquiry
Analyzer
HOST
END
ANY
MOR
END
A
Analyzer
HOST
Suspection
request
Same text
Analytical data
transfer
Positive response
Analytical data
transfer