Setup Guide

Command Structure
part of a message.
<CR> – The Carriage Return character (0x0D).
Upon receipt of a carriage return, the Reader will attempt to parse the command message and,
if it is properly formatted, execute the command.
Reader Replies
The reply the Reader makes to Host commands are also ASCII strings. Replies may either be a
single line or a multi-line reply, depending on the Command. Each line of a reply is terminated
with a Carriage Return + Line Feed character pair, CRLF (0x0D,0x0A).
When the reader has finished sending all data back to the host in response to the command, it
will end the sequence with a “READY>” prompt, indicating that it is prepared to process
another message. Generally, after sending a Command, the Host should not send a new
command until it sees the "READY>" message.
The general format of a Reader-to-Host message is:
[STARTMSG<CRLF>]
<Line1><CRLF>
<Line2><CRLF>
…
<Linen><CRLF>
[STOPMSG<CRLF>]
<CRLF>
READY>
(here [ ] denotes an element that may be optional)
[STARTMSG] – Indicates the beginning of command processing. Not sent on
every command, but is when inventories are performed.
<Lines> – Data sent back in response to the command.
[STOPMSG] – Indicates command processing is finished. Not sent on every
command, but is when where inventories are performed.
READY> – Indicates that the reader is ready to accept another command.
Special Case: Inventory Replies
When the Reader performs a T or Tn command that is setup for infinite repeat, it streams line
data until it sees a character from the host. It then terminates the message with the STOPMSG
and READY> prompt.
16