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MS-4 Imager User’s Manual 3-13
Communications
Half Duplex Mode
Data Originating from the Auxiliary Port
Auxiliary port data to the host is ignored if the
Imager is in a polled mode.
Auxiliary port data or read data is sent to the
host whenever it is received.
Auxiliary port data is not echoed.
Auxiliary port data to the host is always sent
without a preamble or postamble.
Data Originating from the Imager
Data is transmitted to the auxiliary port at the
same time it is transmitted to the host.
Data transmission conforms with all parameters
specified in the configuration menu (e.g. Preamble
,
Postamble, End of Read Cycle).
Data Originating from the Host
All host data is echoed to the auxiliary port in
unpolled mode.
Usage: Useful when the user wants symbol data displayed on an auxiliary menu
close to the Imager.
Definition: In Half Duplex Mode all auxiliary port data and symbol data is sent directly
to the host. Symbol data is displayed on the auxiliary port menu at the
same time the data is sent to the host.
Serial Cmd. <K101,aux port mode,baud rate,parity,stop bits,data bits,daisy chain i.d.
status,daisy chain i.d.>
Options: 2 = Half Duplex
Host
Aux.
Port
Imager
Host
Aux.
Port
Imager
Host
Aux.
Port
Imager
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