Communications Commands and Responses
Section 5-3
5-13
3)
Write (WT)
Command for the use of designating a specific Tag and writing data after detection.
Read verification processing is performed for this command and so it is not necessary to per-
form it again.
Command Frame Structure
STX
Node No.
Command
code
“WT”
Commu-
nications
“
oo
”
Data
type
Fixed
“0”
First write
page
No. of
write
pages
Write
data
ETX BCC
1
2
2
2
1
1
2
2
Specified number
1
1
Communications
Specifies the temporary Tag No. to be written in HEX.
□□
: Temporary No.
(For
□□
, the values from “00” to “7F” are available.)
For details, refer to 5-5 Communications Methods.
Data type
Specifies whether the write data is represented in ASCII or HEX.
A: ASCII code
H: HEX code
For details, refer to 5-6 Data Type.
First write page
Specifies the first page of the Tag to which data is written in HEX.
Setting range: 00h to 0Ah, FFh
(FFh can be specified only when using Philips’ block 4 as user memory. For details,
refer to 2-5 Tag Memory Map.)
No. of write pages
Specifies the number of pages to which data is written in HEX.
Setting range: 01h to 0Ch
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
Response Frame Structure
STX
Node No.
Retry
flag
Command
code
“WT”
Response
code
“00”
Temporary
No.
ETX BCC
1
2
1
2
2
2
1
1
Response code
00: Normal completion
For other response codes, refer to 5-10 Response Code List.
Temporary No.
As a normal response, the values 00 to 7F are returned.
