Communications Command
Section 5-3
5-13
5-3-3-2 Selective Access Read (RD)
In ISO mode, this command reads data from the Tag in communications area by specifying UID
(SNR).
In I.CODE1 mode, this command reads data from the Tag which is specified by the Temporary
Number.
<Command Format>
STX
Node No.
Command code
“RD”
Communi-
cations
method
Data
type
Tag
type
First read
page
No. of read
pages
ETX BCC
UID(SNR)
1 2
2
2 1
1 2
2
16 1
1
Communi-
cations
method
In ISO
mode
Specifies the communications method with a Tag.
SL: UID (SNR) select
* For details, refer to 5-8 Communications Methods
In I.CODE
mode
Specifies the temporary No. in hexadecimal to read from the Tags.
□□
: Temporary No. (The value of
□□
should be within the range of 00h
to 7Fh)
* For details, refer to 5-8 Communications Methods.
Data type
Specifies whether the read data is represented in ASCII or HEX.
A: ASCII code
H: HEX code
For details, refer to 5-9 Data type.
Tag
type
In ISO
mode
Specify the Tag type.
A: I.CODE2 chip
*
In I.CODE1
mode
“0” fixeded.
First read page
Specifies the first page in hexadecimal to read from the Tags.
Specification range: 00 to FFh
(In ISO Mode: I.CODE2 chip should
be from 00 to 1Bh)
Specification range: FB to 0Ah
(In I.CODE1 Mode)
* For details, refer to 2-4 Memory Map of Tag.
No. of read pages
Specifies the number of the pages in hexadecimal to read from the Tags.
Specification range: 01 to FFh
(In ISO Mode: I.CODE2 chip should
be 01 to 1Ch)
Specification range: 01 to 10h
(In I.CODE1 Mode)
UID
(SNR)
In ISO
Mode
Specifies UID (SNR) in hexadecimal to read from the Tags.
In I.CODE1
mode
Not added.
* Tag Type Setting is valid in the operating mode setting range of Reader/Writer.
<Response Format>
STX Node
No..
Retry
flag
Command
code
“RD”
Response
code
“00”
Temporary
No.
UID(SNR) Read
data ETX BCC
1 2 1 2
2
2
16
As
specified
1
1
Response code
00: normal completion
For other response codes, refer to 5-2-4 Response code List.
Temporary No.
* ISO mode: Temporary No. is not added.
* I.CODE1 mode: Returns the temporary numbers of “00” to “7F” in normal
conditions.
UID(SNR)
Indicates UID (SNR) having read from a Tag.
When UID (SNR) (Tag-specific code) additional setting (refer to 5-6-5 SN
Command) is enabled, read data will be preceded by UID. UID(SNR).
Read data
Indicates data having read from 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
Содержание V720S Series
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Страница 57: ...Wiring Method Section 4 4 4 18 ...
Страница 133: ...7 1 SECTION 7 Reference Data 7 1 Communications Time 7 2 7 2 Calculation of Tag Traveling Speed 7 4 ...
Страница 137: ...8 1 SECTION 8 Appendix Appendix 1 Accessories 8 2 Appendix 2 ASCII Code Table 8 3 ...
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