Microscan MS-3000 User Manual page 112

Appendices
Data initiated from the Decoder
• Transmission to the monitor occurs
immediately upon a good read.
• Scan data to the monitor does not
include a preamble or a postamble.
• Communications with the monitor is
always in Point-to-Point protocol,
even if the host is in a polled proto-
col mode.
Data initiated from the Host
• In polled mode, data echoed from
the host to the monitor must be in
the format <B ____> (e.g., to send
the word "LUNCH" to the monitor, it
must be sent in the format
<BLUNCH>).
• In unpolled mode, all host data is
echoed to the monitor.
Half Duplex Mode
In half duplex mode all monitor data
and bar code data is sent directly to
the host. Bar code data is displayed
on the monitor screen at the same
time the data is sent to the host.
Data initiated from the Monitor
• Monitor data to the host is ignored if
the decoder is in a polled mode.
• Monitor data or scanned data is sent
to the host whenever it is received.
• Monitor data is not echoed.
• Monitor data to the host is always
sent without a preamble or a post-
amble.
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MS-3000 Single Head Decoder User's Manual
Monitor
Host
MS-3000 Decoder
Monitor
Host
MS-3000 Decoder
Monitor
Host
MS-3000 Decoder