Intermec Transaction Manager 9560, Руководство пользователя

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9560 Transaction Manager User’s Manual
5-18
Nonbuffered Full-Duplex Operation
In nonbuffered, full-duplex operation, the reader does not buffer, format, or
display the data. The reader sends all terminal port input out the modem port
as the data is received. The host echoes all received data, and formats and
sends the data for displaying on the terminal screen. The reader does not
accept terminal commands.
Use one of these protocols when the terminal is in nonbuffered, full-duplex
mode:
• Point-to-Point
• User-Defined
Although you can configure the terminal in half-duplex, Intermec does not
recommend it.
Nonbuffered Half-Duplex Operation
In nonbuffered half-duplex operation, the host formats the terminal screen. The
reader transmits data to the host and the terminal screen simultaneously. The
reader does not buffer or format data from the terminal or scanner, but
displays and updates the current data buffer on the terminal screen.
The host must also be set for half-duplex operation and does not echo the
terminal or reader data. The reader sends host messages directly to the
terminal without formatting, and the reader does not accept terminal
commands.
Although you can configure the terminal in full-duplex, Intermec does not
recommend it.
Use one of these protocols when the terminal is in nonbuffered, half-duplex
mode:
• Point-to-Point
• User-Defined
Block Terminal Operation
Block terminal operation is generally used with “smart” terminals that can
buffer data. The reader does not buffer, format, or display data from the
terminal but sends this data directly out the modem port to the host.
The reader sends scanned data directly to the terminal through the terminal
port to accumulate in the terminal buffer. The reader does not accept terminal
commands.