Appendix H - Auxiliary Monitor; Transparent Mode - Microscan MS-3000 User Manual

Appendix H — Auxiliary Monitor
An auxiliary monitor, via a 9-pin cable connected to the decoder with a
D-subminiature connector, can:
1. Echo data from the decoder or host.
2. Send data to the host.
3. Access and make changes to the decoder's configuration menus.
The monitor can be configured to operate in one of three modes:
• Transparent
• Non-Buffered Half Duplex
• Non-Buffered Full Duplex
Note: Transparent can be used with all protocols. Full Duplex and Half
Duplex operations can be used with any protocol except polled protocols.
(Polling Mode D, Multidrop, User Defined, and User Defined Multidrop).

Transparent Mode

Used to batch data from the monitor to the host. The decoder buffers data
from the monitor and displays the keyed data on the monitor. The decoder
transmits monitor data to the host when a label is scanned or a carriage
return is entered from the monitor.
Data Initiated from the Monitor
• Monitor data is passed through to
the host whenever a return key is
pressed at the monitor or whenever
bar code data is sent. If sent with bar
code data, it is processed on a first-
in/first-out basis.
• Monitor data to the host is always sent
with a preamble and a postamble.
• If the decoder is in a polled mode to
the host, monitor data will still pass
through.
• A <D> command is the only command accepted by the decoder from the
monitor. All other commands will pass through to the host.
MS-3000 Single Head Decoder User's Manual
Auxiliary Monitor
Monitor
Host
MS-3000 Decoder
A-13