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5-2 Communication Operation Sequence
5-6
(Host device)
(Antenna)
<Station No. 00>
(Tag)
(Waits for tag approaching)
Not yet
approached
(Tag)
Polling Auto command
Station No. 00
Receives a response
Polling response
Polling Auto command
Station No. 01
Not yet
approached
(Waits for tag approaching)
Not yet
approached
Not yet
approached
Receives a response
Receives a response
Requests a response
Station No. 00
Response of "Not yet
approached"
Requests a response
Station No. 01
Receives a response
Communication process
Response
Tag
Requests a response
Station No. 00
Receives a response
Requests a response
Station No. 01
Receives a response
(Antenna)
<Station No. 01>
Polling response
Response of "Not yet
approached"
(Waits for tag approaching)
Pass
Not yet
approached
(Waits for tag approaching)
Response of "Not yet
approached"
(Waits for tag approaching)
(1) The Polling Auto command is sent from
the host device to the antenna station
No. 00.
(2) Immediately after receiving the com-
mand, the antenna returns a response
that the command has been accepted.
(3) The Polling Auto command is sent from
the host device to the antenna station
No. 01.
(4) Immediately after receiving the com-
mand, the antenna returns a response
that the command has been accepted.
(5) The host device can inquire the progress
of process using a response request. If
the tag has not yet approached, a
response of "Not yet approached" is
returned to the response request.
(6) When the tag passes the front of the
antenna station No. 00, the antenna sta-
tion No. 00 communicates with the tag.
(7) When the response request is sent to the
antenna which ended the communica-
tion with the tag, the antenna returns a
response of process result and becomes
ready to accept a command.