User's Manual

5-1 Control by Commands
5-1
5-3
5-1-1 Control by Commands
The Reader/Writer operation is controlled by the commands from the connected host. The result of the
command execution is returned as a response.
In Online Mode, all the operations, such as Tag-data Reading/Writing, Tag-function setting, operating
condition setting, or Reader/Writer function control, are controlled by the commands.
In Offline Mode, the Reader/Writer functions controlled by the commands are restricted to those
controlled by Stop and Reset commands. The operating conditions for Offline Mode are set in Online Mode.
5-1-2 Command-Response Flow
In Online Mode, the host sends an instruction command and the Reader/Writer returns the result as a
response. The command-response flows vary, depending on the types of commands and specified
communications, as shown below.
1-to-1 Response
One response is returned per command for Single Trigger (ST), Single Auto (SA), FIFO Trigger (FT), FIFO
Auto (FA), UID Select (SL), or Tag Designation is specified for the command that performs the
communication with the Tag, or when a command that does not perform the communication with the Tag
is specified.
Host
Reader/Writer
Command
Response
Multiple Response
Multiple Responses are returned per command for Single Repeat (SR), FIFO Repeat (FR), Multiple
Trigger (MT), Multiple Repeat (MR), or Tag Detection (LT) is specified for the command that performs the
communication with the Tag.
Host
Reader/Writer
Response
Command
Response Response
Response
No response
When the Reader/Writer receives the Reset Command(XZ), it is reset without returning a response and
waits for the next command.
Host
Reader/Writer
Command
Reset
Reader/Writer Antenna
Tag
Host device (PC)
Command
(
direction
)
(1)
Communication with ta
g
General input General output
Response
(
result
)
(2) Operation
condition setup
(3) Function control
（functions such as process
stop or output setup)