Omron V720S-BC5D4A User Manual page 76

5-2 Control Procedures for Each Communication
■ Selective Access Operation: In ISO Mode
(Host)
Multi-Read Command
(UID Additional Setting)
Receives a response
Receives a response
Receives a response
Receives a response
Specifies Tag (UID2)
Receives a response
■ Exceptions
(1) When the Tag with the UID specified by UID Select Command does not exist in the communication area,
the Reader/Writer returns No Tag error (Response Code:72) to the host.
(Reader/Writer)
Waits for a Tag
A response (UID1)
Tag detection
A response (UID2)
Tag detection
A response (UID3)
End Response "72"
Communications process
Response of the Tag (UID2)
(Tag)
(1) The Reader/Write receives a command.
Tag (UID1) (2) The Reader/Writer communicates with the
Tag.
(3) The Reader/Writer returns a response with
UID.
Tag (UID2)
(4) When a Tag is in the communications
The Reader/Writer communicates with the
area of the Reader/Writer Antenna, the
Tag when it is in the Reader/Writer antenna
Reader/Writer communicates with the
communication area.
Tag (UID3)
(5) Returns an end response when the
After the Reader/Writer has communicated
controller completes to communicate
with all the Tags in the communication area,
with all Tags in the communications area.
it returns the Detection End Response.
(6) Controller receives UID Additional
The Reader/Writer receives UID Select
Command with the UID of the
Command of the Tag to communicate
communication target Tag added.
with.
Tag (UDI2)
(7) The controller performs the
The communication with the Tag with the
communication processing with the
specified UID is processed.
5-2
5-15