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Communications Commands and Responses
Section 5-3
5-20
3)
Read of Application ID and Family Code (for Tag)
Command Frame Structure
STX
Node No. Command
code
“RD”
Communi-
cations
Data
type
Tag
No.
setting
Fixed
value
“FF”
Fixed
value
“01”
ETX
BCC
1
2
2
2
1
1
2
2
1
1
Communications
Specifies a communications method.
ST: Single Trigger
SA: Single Auto
SR: Single Repeat
FT: FIFO Trigger
FR: FIFO Repeat
MT: Multi-trigger
MR: Multi-repeat
LT: Selective Access (Tag detection)
□□
: Selective Access (read)
(For
□□
, the values from “00” to “7F” are
available.)
(UT: Special Read Trigger
UA: Special Read Auto
UR: Special Read Repeat)
For details, refer to 5-5 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 5-6 Data Type.
Tag Number setting
In the Selective Access (read), Single, and FIFO Accesses, Tag Number setting is
“0” fixed.
In the Multi Access and Selective Access (Tag detect) command, set the number
of Tags with which to communicate simultaneously.
Setting range: 1 to 7
Refer to 5-7 Tag Number Setting for details.
Response Frame Structure
·
Response frame structure for Single, FIFO, and Multi Accesses
(excluding detection completed response)
Read data
STX
Node No.
Retry
flag
Command
code
“RD”
Response
code
“00”
Family
code
Appli-
cation
ID
Not
defined
Not
defined
ETX BCC
1
2
1
2
2
4(ASCII),8(HEX)
1
1
·
Response frame structure for Selective Access
(excluding Tag detection completed response)
Response
code
“00”
Read data
STX
Node No.
Retry
flag
Command
code
“RD”
Temporary
No.
Family
code
Appli-
cation
ID
Not
defined
Not
defined
ETX BCC
1
2
1
2
2
2
4(ASCII),8(HEX)
1
1
Response code
00: Normal completion
For other response codes, refer to 5-10 Response Code List.
Read data
Indicates the data having been read.
The number of characters of the data is as follows:
ASCII code: 4
HEX code: 8