Communications Command
Section 5-3
5-9
5-3 Communications Commands and Responses
This section describes commands and responses when BCC has been enabled. When BCC has
been disabled, BCC is not attached to either the command or response frames.
5-3-1 Read (RD)
This command reads data from a Tag in the communications area.
<Command Format>
STX
Node No..
Command
Code
“RD”
Communi-
cations
method
Data
type
Tag
type
First read
page
No. of read
pages
ETX BCC
1 2
2
2 1
1 2
2 1
1
Communications
method
Specifies a communications method
ST: Single Trigger
FA: FIFO Auto
SA: Single Auto
FR: FIFO Repeat
SR: Single Repeat
MT: Multi Trigger
FT: FIFO Trigger
MR: Multi Repeat
* 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
Specifies the Tag type.
A: I.CODE2 chip
*
In I.CODE1
mode (Tag
No. setting)
Set the number of Tags which communicate simultaneously.
0 : when executing single or FIFO communications
“1 to 7” : when executing multi-communications
* For details, refer to 5-10 Tag Number Setting.
First read page
Specifies the first page in hexadecimal to read from the Tags.
Specification range: 00 to FFh
(in ISO mode: 00 to 1Bh for I.CODE2
chip)
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 pages in hexadecimal to read from the Tags.
Specification range: 01 to FFh
(in ISO mode: 01 to 1Ch for I.CODE2)
Specification range: 01 to 10h
(in I.CODE1 mode)
* The setting number of each Tag type is valid only when it is within the range of each operating
mode in Reader/Writer.
<Response Format>
(1) Read data: there are responses according to the number of Tags in its communications area
when multi- communications method is executed.
STX Node
No.
Retry
Flag
Command
Code
“RD”
Response
Code
“00”
UID(SNR)
Read
data ETX
BCC
1 2 1 2
2
16
As
specified
1
1
Содержание V720S Series
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