5-4
Communication Commands
5-4
5-33
5-4-5 Write (WT)-UID Select/Specified Tag
This command writes data to the Tag of either UID (SNR) (in ISO mode) or Temporary Number (in
I.CODE1 mode).
<Command Format>
STX
Node
No..
Command code
“WT”
Communi
cations
method
Data
type
Tag
type
First
write page
First
write page
UID(SNR) Write
data
ETX BCC
1 2 2
2 1 1 2 2
16 As
specified
1
1
In ISO mode
Specifies the communications method with a Tag.
SL: UID (SNR) select
* Refer to SECTION 5-3-4 Communication Mode List for details.
Communic
ations
method
In I.CODE1
mode
Specifies the temporary No. in hexadecimal to write to the Tags.
□□
: Temporary No. (The value of
□□
should be within the range of
00h to 7Fh)
* Refer to SECTION 5-3-4 Communication Mode List for details.
Data type
Specifies whether the read data is represented in ASCII or HEX.
A: ASCII code
H: HEX code
*Refer to SECTION 5-3-6 Specifying a Data Code for details.
In ISO mode
Specify the Tag type.
A: I.CODE SLI chip
Tag
type
*
In I.CODE1 mode
“0” fixed.
First write page
Specifies the first page in hexadecimal to write to the Tags.
Specification range: 00 to FFh In ISO mode: I.CODE SLI chip
should be between 00 to 1Bh)
Specification range: FB to 0Ah (In I.CODE1 mode: The available
user area should be between FF page and 0A page)
*Refer to SECTION 2-4 Memory Map of Tag for details.
No. of read pages
Specifies the number of the pages in hexadecimal to write to the Tags.
Specification range: 01 to FFh (In ISO Mode: I.CODE SLI chip
should be from 01 to 1Ch)
Specification range: 01 to 0Eh (In I.CODE1 Mode)
In ISO mode
Specifies UID (SNR) in hexadecimal to write to the Tags.
UID
(SNR) In I.CODE1 mode
Not added.
Write data
Indicates data to write to the Tag. The number of characters of the
data is as follows.
ASCII Code: No. of write pages x 4
HEX code: No. of write pages x 8
* Tag Type Setting is valid in the operating mode setting range of Reader/Writer.
<Response Format>
STX Node
No..
Retry
flag
Command code
“WT”
Response code
“00”
Temporary
No.
ETX
BCC
1 2 1 2
2
2 16 1 1
Response code
00:normal completion
For other response codes, refer to 5-3-7 Response code List.
Temporary number
(I.CODE1 Mode
only)
Returns the Temporary numbers from 00 to 7F in the normal state.
UID/SNR
(ISO Mode only)*
UID/SNR is added at the top of read data when UID/SNR addition setting is
enabled.
* UID/SNR is not added in I.CODE1 mode regardless of the UID/SNR addition setting status.
I.CODE1 SYSTEM AREA
From Page FD to Page FF is a system area for write-protect and QUIET/EAS settings. Depending on the
content of write data, a Tag may become write-protected or inaccessible, so be sure to understand these
pages fully before use.It is strongly recommended that you use a system command to write in these pages
(refer to 5-5) rather than using the write command.
