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< Operation timing of communication sequence>
(1)Single Once
The reader reads a single tag at a time (One-to-one communication). When the reader detects the first tag, it
returns response and terminates transaction (one response/ one transaction). If the reader does not detect any
tag, it continues the process for a specified period of time. In this case, the response indicates “0” as the
number of tags. If the period is not specified, it continues the process until the termination command has been
sent or until it detects a tag.
< A sequence when the reader detects one tag for the specified period.>
< A sequence when the reader does not detect any tag for the specified period (There is no tag).
Host
Reader
Tag
Command
Read tag
Process
Detecting and reading tag
Tag
A
Response
Tag No.:1
Tag ID:A
Host
Reader
Tag
Command
Read tag
Process
Detecting and reading tag
Tag
A
Response
Tag No.:1
Tag ID:A
Host
Reader
Tag
Command
Read tag
Process
Detecting and reading tag
Response
Tag No.: 0
Tag ID: None
Host
Reader
Tag
Command
Read tag
Process
Detecting and reading tag
Response
Tag No.: 0
Tag ID: None
Period (Timeout)
Just after the reader
communicates the tag, it
returns a response (reporting
the read tag data) to the host.
At the end of the specified
period, the reader returns a
response (reporting “no tag”)
to the host.
Period (Timeout)