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5-7 Tag Communication Command
5-23
5-7-4 Write
Writes data into a tag.
<Command Format> * A figure below shows the number of characters.
Command code and communication designation
DA
Destination (antenna) station number. "00" to "31". This can
be modified in "5-9-8 Station Number Setting".
Initial value "00"
SA
Source (host device) station number. "80" to "89". If only one host device is used, specify "80".
Command code
Specify according to the table below.
Communication designation
Split flag
Specify "A".
Code designation
Specify whether a data read out of a tag is ASCII code or hexadecimal code.
A: ASCII code
H: Hexadecimal code
Start address
Specify according to the table below.
Number of written bytes
Command
Tag status after
execution
Command
code
Communication
designation
Remarks
Single Trigger
Sleep
W1
W3
SU
Single Trigger
Standby
WU
Any other command can be executed to the tag immediately after it.
Multi Trigger (approximately 4 tags)
Sleep
SS
Multi Trigger (approximately 8 tags)
SM
Multi Trigger (approximately 16 tags)
SL
Single Auto
Sleep
W4
W6
SU
Single Auto
Standby
WU
Any other command can be executed to the tag immediately after it.
Polling Single Auto
CU
Single Repeat
Sleep
W7
W9
SU
FIFO
Multi Repeat (approximately 4 tags)
SS
Multi Repeat (approximately 8 tags)
SM
Multi Repeat (approximately 16 tags)
SL
Polling Single Repeat
RU
For a query command of polling, refer
to "5-8-3 Request to Respond".
Polling Multi Repeat (approximately 4 tags)
RS
Polling Multi Repeat (approximately 8 tags)
RM
Polling Multi Repeat (approximately 16 tags)
RL
With verification read
W1, W4, W7
After an antenna writes data into a tag, the antenna reads the data from the tag
and check whether the data is correct. If the data is not correct, the termination
code becomes 71. Writing is reliable, but the communication time with verification
read is twice the length of that without verification read.
Without verification read
W3, W6, W9
After an antenna writes data into a tag, the antenna does not read the
data.
Split flag
Command
code
Communi-
cation des-
ignation
Code designation
Start address
Number of
written bytes
(BCC)
* It can be specified whether BCC is
enabled or disabled.
Written data
Specified number