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5-11
There are three types of commands as follows:
(1) Tag communication command: A command to communicate with a tag
(2) Antenna operation command: A command to operate an antenna when communicating with a tag.
(3) Antenna setting command: A command to set an antenna before operating a system.
(1) Tag communication command
Use this command when an antenna is in an operation mode. This command cannot be used in a setting mode. Refer to Section 5-1.
Command
Communication designation
* Direct response: A communication mode that a command is received from a host device and a response is made immediately after
the command execution.
Command
Communication Mode
(Sections 5-2-1)
Command Code
Function
Read
(Sections 5-7-1 and
5-7-3)
Trigger
R3
Reads data, Write Protect setting, date of produc-
tion and waiting time for sleep.
Single Auto
R6
Repeat
R9
ID Code Read
(Section 5-7-2)
Trigger
I3
Reads an ID code of tag.
* The ID code is a value inherent to tag and cannot
be rewritten.
Single Auto
I6
Repeat
I9
Write Without Verifi-
cation
(Sections 5-7-4 and
5-7-5)
Trigger
W3
Writes data, Write Protect setting and waiting time
for sleep.
Single Auto
W6
Repeat
W9
Write With Verifica-
tion
(Sections 5-7-4 and
5-7-5)
Trigger
W1
Writes data, Write Protect setting and waiting time
for sleep. Reads and checks written data after writ-
ing.
Single Auto
W4
Repeat
W7
Data Fill
(Sections 5-7-6 and
5-7-7)
Trigger
F3
Writes a fixed data into a specified area in memory.
For example, by writing "0" into all areas in memory,
everything is cleared.
Single Auto
F6
Repeat
F9
Communication Test
(Section 5-7-8)
Trigger
T0
Communication test between an antenna and tag.
Direct response / Polling
((1) in Section 5-2-2)
One tag / Multi (several
tags) / Tag designation
((2) in Section 5-2-2 and
(1) in Section 5-2-3)
Tag status after com-
mand execution
(Section 5-1)
Communication designation
(1)
(2)
Direct response
One tag
Sleep
S
U
Direct response
One tag
Standby
W
U
Polling
One tag
Standby
C
U
Direct response
Multi (several tags)
Sleep
S
S/M/L
Polling
Multi (several tags)
Sleep
R
S/M/L
Direct response
Tag designation
Sleep
S
N
Direct response
Tag designation
Standby
W
N
Communication designation (1)
W: Direct response. A tag after execution is in a standby state.
S: Direct response. A tag after execution is in a sleep state.
C: Polling. A tag after execution is in a standby state.
R: Polling. A tag after execution is in a sleep state.
Communication designation (2)
U: One tag access without ID code designation.
N: One tag access with ID code designation.
S/M/L: Several tag access.
5-4 Communication and Communication Designation List