User's Manual

5-4 Communication Commands
5-4
5-29
5-4-2 Write (WT)
Writes data to the Tag in the communication area. Also used to write data to some system
areas in I.CODE1.
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
“WT”
Communi
cations
method
Data
type
Tag
type
First write
page
No. of
write
pages
Write
data
ETX BCC
1 2 2 2 1 1 2 2
As specified
1 1
Communications
method
Specifies the communications method with a Tag.
ST: Single Trigger FR: FIFO Repeat
SA: Single Auto MT: Multi Trigger
FT: FIFO Trigger MR: Multi Repeat
FA: FIFO Auto
*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
Specifies the Tag type.
A: I.CODE SLI chip
Tag
typ
e
*
In I.CODE1
mode
(Tag No.
setting)
Set the value with accordance with the number of Tags
communicating simultaneously.
0 : when performing Single or FIFO communications method
“1 to 7” : when performing multi communications method
*Refer to SECTION 5-2-5 Specifying a Tag Code for details.
First write page Specifies the first page in hexadecimal to write to the Tags.
Specification range: 00 to FFh (in ISO mode: 00 to 1Bh for I.CODE
SLI chip)
Specification range: FD 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 write pages Specifies the number of pages to which data is written to Tags in
hexadecimal.
Specification range: 01 to FFh (in ISO mode: 01 to 1Ch for I.CODE
SLI)
Specification range: 01 to 0Eh (in I.CODE1 mode)
Write data Indicates data to be written 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
* Setting values of each Tag type is valid in the operating mode setting range in
Reader/Writer.
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 data be re-written using a command dedicated to system area re-writing
rather than Write Command (Refer to SECTION 5-5). Re-writing data when the Tag is in an unstable
communication area may destroy data in the system area, interrupting the communication with the Tag.
Be sure to re-write data while the Tag is in a stable communication area.