Intermec Janus 2050, User Manual

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JANUS 2050 Vehicle-Mount Computer User’s Manual (4MB) nubbet nubbet c
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Choosing a Communications Application
You can use one of the three communications applications shipped with your
JANUS 2050, you can create a JANUS PSK communications application, or you
can purchase a third-party communications application:
IRL Desktop You can use the IRL Desktop to transfer IRL programs and IRL
data files between the JANUS 2050 and a host computer. For help, see Chapter
7, “Working With IRL.”
Interlnk/Intersvr
You can use the DOS utilities Interlnk and Intersvr to access
the drives in the host computer as if they existed in the JANUS 2050, and vice
versa. For help, see “Communicating Using the Interlnk/Intersvr Utilities”
later in this chapter.
Communications Manager You can use the Communications Manager utility to
transmit and receive data files, and to request COM port and protocol status.
For help, see “Communicating Using Communications Manager” later in this
chapter.
JANUS PSK communications application You can create your own
communications application using the software libraries provided with the
JANUS Programmer’s Software Kit. For help, see the JANUS PSK reference
manual set.
Third-Party communications application You can use a third-party
communications application that conforms to the requirements of the JANUS
2050.
Choosing a Communications Protocol
The device can communicate in any of seven configurable protocols. The
protocols are introduced briefly here. For details about their characteristics and
parameters, see “Communications Protocol, Configure” in Chapter 10.
User-Defined protocol
User-Defined is a powerful protocol because you can
configure the protocol to your own requirements. For example, you can
configure User-Defined for a Point-to-Point like protocol, but with an LRC and
an acknowledgment from the receiver being required. You can also define
communications characters such as SOM, POL, or SEL, or disable these
characters by setting them to zero.
User-Defined protocol is also used to define User-Defined Multi-Drop protocol.
In User-Defined Multi-Drop, the POL and SEL protocol characters must be set
in a predetermined combination. See Appendix A for the correct POL and SEL
combinations.