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4-3 Commands and Responses during CR Control
4) Read UID (SNR)
Use this command to read the serial numbers from the tags.
Command
Command
'3'
'5'
Response
The response returns the UID (SNR) read and the end code (normal end: 00).
End code
' 0 '
' 0 '
5) Set write-protection to Tag
Use this command to write-prohibit tags.
The maximum number of pages that can be write-protected in a single operation is one bank, and
write-protecting pages across banks is impossible.
Command
This command sends the pages to be write-protected as command data. The page specification is
achieved by setting the bit corresponding to each page to ON. When performing reading only, all the
page specifications are set to OFF.
Command
' 3 '
' 9 '
Tag type
I･CODE1
ISO chip
Response
The response returns the setting status for write-protection and the end code (normal end: '00').
End code
' 0 '
' 0 '
4-14
Communica-
tions option
UID (SNR)
･･･
Data 1
Bank
Communica-
tions option
specification
Bank
F
E
'00'
'00' to '0F'
Setting status
Bank
Page
specification
specification
Data 8
Page
specification
Page specification (settable value)
D
C
B
A
9
0
0
'00' to 'FF'
8
7
6
5
4
3
'00' to 'FF'
Section 4-3
2
1
0
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