Planning The Network Connection - Intermec Janus 2050 User Manual

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This chapter discusses communications protocols, explains how to set up the JANUS
2050 to communicate with another device, and describes the different methods you
can use to communicate with the JANUS 2050. For information on radio frequency
communication (RF), refer to the Radio Frequency Quick Reference Guide that ships
with this manual for information about 900MHz RF communication, or to the
documentation in your 2.4 GHz Installation Utility kit for information about 2.4GHz RF
communication.

Planning the Network Connection

In most networking and data communications situations, the JANUS 2050 uses
a communications application, communications protocol, and protocol handler
to talk to the network.
What is a communications application? A communications application is a
software program that lets the JANUS 2050 communicate with another
computer device. Many specialized communications applications are available
because there are many specialized data communications tasks to be
performed. For example, a communications application may establish a
connection with another computer, transfer files, and perform error checking—
or it may make remote directories and files available to the local user.
Communications applications usually require communications protocols and
protocol handlers to handle the actual transmission of data. However, you do
not need a communications protocol or protocol handler if the application will
access the COM port directly.
What is a communications protocol? Communications protocols determine
exactly how data is transmitted between the JANUS 2050 and the connected
device. Each protocol has parameters you can set, such as baud rate and parity.
Both the JANUS 2050 and the connected device must use the same protocol
and parameter settings to communicate properly.
What is a protocol handler? Protocol handlers are programs you run only on
the JANUS 2050. The protocol handler transmits and receives data in the
manner specified by the communications protocol. Each protocol handler is
used with a specific communications protocol.
The next sections describe the communications protocols and protocol handlers
available for your JANUS 2050.
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