Choosing A Protocol Handler - Intermec Janus 2010 User Manual

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Networking the Reader
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nugget
helconital
Point-to-Point protocol is typically used to connect the reader to a CRT
terminal or host computer. Since Point-to-Point is an unsolicited protocol, you
can initiate the transmit command from the reader or the host.
Polling Mode D Protocol Polling Mode D requires the host computer to ask the
reader for data it might have (polling) and to request to send data to the reader
(selecting). PC-IRL uses this protocol.
RF Protocol RF Protocol is used in radio frequency (RF) networks only. For
details, see your JANUS RF documentation.
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 to act like a Point-to-Point protocol, except that it
requires an LRC and an acknowledgment from the receiver. You can also
define the communications characters such as SOM, POL, or SEL, or disable
these characters by setting them to null.
You can also use User-Defined protocol to define User-Defined Multi-Drop
protocol. In User-Defined Multi-Drop, you must set the POL and SEL protocol
characters in a predetermined combination. For help, see "POL and SEL
Combinations for Multi-Drop Protocol" in Appendix C.

Choosing a Protocol Handler

There are three protocol handlers:
PHIMEC The Intermec protocol handler. PHIMEC lets you communicate with
other Intermec devices such as concentrators.
PHPCSTD The PC Standard protocol handler. PHPCSTD provides low-level
communications abilities and protocol services at the DOS level for
non-communications software, including byte-by-byte transfer and status
information.
RFPH The RF protocol handler. RFPH lets you communicate with devices in
an RF network.
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