Omron V720S Series, Руководство по эксплуатации

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Reader/Writer under Operating Conditions Section 5-1
5-3
5-1 Reader/Writer under Operating Conditions
5-1-1 Reader/Writer under Operating Conditions
The V720S series of RFID system receives a command (1) from the host, communicates with the
Tag (2), and returns its result to the host as a response (3).
■ Reader/writer under operating conditions
● Command wait state
The command wait state indicates that a Reader/Writer executes no commands. The Reader/Writer
can receive all commands except for AK and NK commands, which control ACK/NACK. When the
Reader/Writer receives a command, it goes into command processing state.
● Command processing
After the Reader/Writer receives a command, the next command is ignored until the command
processing is completed, however, the stop and reset commands will be executed anytime.
5-1-2 Communications Phase
The following commands and responses can be made by specifying different command communica-
tions settings.
(1) No Response
When the Reader/Writer receives the Reset Command, it is reset without returning a response and
waits for the next command.
Host
Controller
Command
Reset
(2) 1-to-1
One response is sent per command with the following commands: Single Trigger, Single Auto, FIFO
Trigger, FIFO Auto (commands that communicate with Tags) or commands that do not communicate
with Tags.
Host
Controller
Command
Response
Host
Reader/Writer
Antenna
Tag
(1)
Command
(3)
Response
(2)
Communications
(Wireless communications
between antenna and Tag)