19
Using the Stick Reader’s Serial Data Interface
The RS232 serial data interface is available on the RS320 by connecting the
detachable Data/Power Cable to the Cable Connector located on the Endcap. The
Stick Reader’s Cable Connector is covered with a protective cap to guard against
foreign material contamination. Remove this cap and install the Data/Power Cable by
engaging the connector and rotating the lock-ring.
The RS232 serial interface comprises a 3-wire arrangement with a DB9F connector,
and consists of transmit (TxD/pin 2), receive (RxD/pin 3), and ground (GND/pin 5).
Figure 3 illustrates the power and data wiring of the Power Jack and Data Connector.
This interface is factory configured with the default settings of 9600 bits/second, no
parity, 8 bits/word, and 1 stop bit (“9600N81”). These parameters can be changed by
using the options included in the Configurator© program.
Note 15 - The RS340 Stick Reader is provided with the connectorized
endcap and detachable Data/Power cable in its standard configuration.
Note 16 - The Stick Reader RS232 interface is wired as a DCE (data
communications equipment) type that connects directly to the serial port of
a PC or any other device that is designated as a DTE (data terminal
equipment) type. When the Stick Reader is connected to other equipment that is
wired as DCE also (such as a Palm Pilot or Pocket PC), a “null modem” adapter is
required in order to properly cross-wire transmit and receive signals so that
communications can occur.
Note 17 - The Stick Reader’s serial data connection can be extended using
a standard DB9M to DB9F extension cable. Extensions longer than 20
meters (~65 feet) are not recommended for data, and extensions longer that
2 meters (~6 feet) are not recommended for data and power.
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