User Manual Part 1

LRP2000 Long Range Passive Reader/Writer

Communications Interface

4.1 Configuring the Serial Interface

COM1

In normal use for reading and writing RFID tags, communications with

the LRP2000 will be accomplished via the main communications

interface, COM1. This communications interface can be accessed by

both point-to-point and addressed serial communications protocols.

For point-to-point serial communication, the LRP2000 supports

RS232 and RS422 as the standard protocols. For multiplexed

communications, Ethernet is available as an option. Both RS232 and

RS422 interfaces are optically isolated. The RS422 interface is

especially suited for long cable lengths, and for noisy environments.

NOTE:

NOTE: The delay between the characters sent to the

controller cannot be longer than 200 ms.

The options for each configuration parameter for the COM1 interface

follow:

The default configuration parameters for COM1 are:

Table 4-2:

Baud rate 9600 bps

Number of Data Bits 8

Number of Stop Bits 1

Parity None

Handshake None

Table 4-1:

Baud rate

1200, 2400, 4800, 9600,

19200, 38400 bps

Number of Data Bits 7, 8

Number of Stop Bits 1

Parity Even, Odd, None

Handshake None, Xon/Xoff