User's Manual

5-2 Control Procedures for Each Communication
5-2
5-10
5-2-2-3 FIFO Repeat Mode
The Reader/Writer waits until the Tag has entered the antenna communication area and starts
communicating. It communicates with the Tags serially as they enter the antenna
communication area, and returns the responses. When the communication has been completed,
the Reader/Writer makes the Tag inaccessible, so that it can communicate with the next Tag
that entered the area although the Tags with which the Reader/Writer has completed the
communication are still present in the same area.
This state continues until the communication has been terminated by Stop Command (ST), or
Reset Command (XZ), and other commands are rejected.
タグ接近待ち
タグ接近待ち
タグ接近待ち
交信処理
レスポンス
タグ接近待ち
レスポンス受信
リピートコマンド
ビジー状態
ビジー状態
ビジー状態
未接近
（上位機器） （リーダライタ） （タグ）
①
R/W
アンテナの交信領域内にタグが入る
のを待ちます。
②タグが
R/W
アンテナの交信領域内に入る
とリーダライタはタグと交信を行います。
③交信が終了するとレスポンスを返信しま
す。
その後、再度
R/W
アンテナの交信領域内
にタグが入るのを待ちます。
④再度タグが
R/W
アンテナの交信領域内に
入ると交信を行います。
交信処理
タグ（
1
）
タグ（
2
）
ビジー状態
ビジー状態
レスポンス
未接近
通過
未接近
通過
未接近
レスポンス受信
When the Tag is on the boundary of the communication area or enters the communication area
more than once because of swing, the Tag may be processed more than once, or some Tags may
not be processed.
In this case, enable the Duplicate Communication Protecting Function (Table number = 1). The
function will prevent the Reader/Writer from communicating with the Tags already
communicated with, and allows proper and sequential Tag processing.［Software Ver 1.20 and
higher only］
Note
To send another command from Repeat Mode, be sure to use either the stop command or reset command, and
make sure that the Reader/Writer has finished processing commands and is in command waiting status before
sending the new command.
Waits for a Tag to approach
Waits for a Tag to approach
Communication process
Response
Receives a response
Waits for a Tag to approach
Repeat Command
Busy
Busy
Busy
Busy
Receives a response
Busy
Waits for a Tag to approach
Communication process
Response
(Host) (Reader/Writer)
(Tag)
(1) Waits for a Tag to enter the
Reader/Writer antenna
communication area.
(2)When a Tag enters the Reader/Writer
antenna communication area, the
Reader/Writer communicates with the Tag.
(3)When the communication has been completed,
the Reader/Writer returns a response.
Then it waits for the next Tag to enter the
Reader/Writer antenna communication area.
(4) When the next Tag enters the
Reader/Writer antenna
communication area, the
Reader/Writer communicates with
the Tag.
Ta
g
(
1
)
Ta
g
(
2
)
Passes
Passes
Yet to
approach
Yet to
approach
Yet to
approach
Yet to
approach