User's Manual

5-4 Communication Commands
5-4
5-36
5-4-8 Polling Single Auto Write (PW)
Immediately after receiving the Polling Single Auto Write Command, the Reader/Writer returns a
response indicating the acceptance of the command and waits for a Tag to enter the communications area
of the Antenna. Then it writes data to the entering Tag. The host can inquire of the Reader/Writer about
the results of communications processing using the Polling Check (PC) command.
There is no need to perform the verify read process, since this command performs it as part of its
execution.
<Command Format>
STX Node No..
Command
code
“PW”
Data
type
Tag
type
First write
page
No. of
write
pages
Write data ETX BCC
1 2 2 1 1 2 2 As specified 1 1
Data type Specifies whether the write 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
Not added.
First write page Specifies the first page in hexadecimal to write data to the Tags.
Specification range: 00 to FFh (In ISO mode: I.CODE SLI chip
should be from 00 to 1Bh)
Specification range: FB to 0Ah (In I.CODE1 mode: the range of the
writable user area is FF page to 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 data 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)
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
“PW”
Response
code
“74”
ETX BCC
1 2 1 2 2 1 1
Response code 74: Command acceptance
For other Response Codes, refer to SECTION 5-3-7 Response Code List.
I.CODE1 SYSTEM AREA
The pages from FD to FF on the I.CODE1 Chip are system areas for setting write access conditions,
QUIET/EAS, family code/application ID. Users must understand thoroughly how the function works
because the Tag may be locked or access may be disabled depending on data written to the area. It is
strongly recommended that data be re-written using a command dedicated to system area writing rather
than Write Command (Refer to SECTION 5-5).