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Communications Commands and Responses
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
1
2
Communications
Data type
First write page
No. of write pages
Write data
Response Frame Structure
STX Node No.
1
2
Response code
Temporary No.
Commu-
code
nications
"WT"
"oo"
2
2
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.
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.
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.)
Specifies the number of pages to which data is written in HEX.
Setting range: 01h to 0Ch
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
Retry
Command
Response
flag
code
code
"WT"
"00"
1
2
2
00: Normal completion
For other response codes, refer to 5-10 Response Code List.
As a normal response, the values 00 to 7F are returned.
Data
Fixed
First write
type
"0"
page
1
1
2
Temporary
ETX BCC
No.
2
1
No. of
Write
write
data
pages
2
Specified number
1
Section 5-3
ETX BCC
1
1
5-13
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