User's Manual

S2510 Reader - Reference Guide April ’00

1.3.1 Interfaces

The reader has the following connections/interfaces:

• Communications interface: RS232, RS422 or RS485 (F & G)

• 8 general purpose I/O lines (B)

• 2 Open Collector outputs (E)

• Synchronization bus (C)

• Carrier Phase Synchronization bus (D)

• Power connector (A)

• Indicator outputs connector (H)

• Antenna connector (I)

1.3.2 Communications Protocols

There are two protocols that can be used with the S251B Reader, they are:

ASCII Protocol.

This is a simple protocol that you can use to send ASCII charac-

ter commands to the reader. It is possible to use a standard termi-

nal emulator program to send ASCII commands. The ASCII

protocol can only be used with RS232 or RS422.

TIRIS Bus Protocol.

This is a binary protocol suitable for communication be-

tween a controlling device (for example: a PC) and one or more

readers. For example with a single reader using an RS232 inter-

face or up to 31 readers using RS422/485. The TIRIS Bus protocol

can be used with RS232 or RS422/485.

If you are using one reader per controlling device you may choose the protocol that

best suits your requirements. However, if you have more than one reader connected

to a bus running under a controlling device then you must use the TIRIS Bus Proto-

col.

For details regarding these communications protocols, please refer to the relevant

manual (11-06-21-037 for the ASCII Protocol, 11-06-21-053 for the TBP), available

at the TIRIS home page:

http://www.tiris.com