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User Manual
E727T0005, valid for E-727
BRO, 2019-06-28
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 151 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
Sender Flow Charts
Note 1: Transmission is started after writing the sender FIFO, or when FIFO is full (depends on
implementation). Writing of data to sender FIFO is not shown.
Note 2: To check if the connection is lost an error counter can be added. When too many errors
occur the state machine returns to the idle state.
Note 3: Especially for slow systems a time out for acknowledge is useful, because acknowledges
could be lost during the system evaluates the received data packets. In this case data should be
sent again to force the receiver to sent acknowledge again.