System Command
Section 5-4
5-21
5-4 System
Command
5-4-1 System Read (SR): ISO Mode Only
This command read system information in the system area of the Tag.
<Command Format>
STX
Node No..
Command code
“SR”
Tag
type
System
method“00”
ETX BCC
1 2
2 1 2 1
1
Tag type
Specified a Tag type
A: I.CODE2 chip
System method
Specified the kind of system information.
“00” fixed.
<Response Format>
STX Node
No.. Retry
flag
Command code
“SR”
Response code
“00”
Information flag
UID(SNR)
Information
field
ETX BCC
1 2 1 2
2
2
16
2to10
1
1
Response code
00:normal completion
For other response codes, refer to 5-2-4 Response code List.
Information flag
Indicates information in the Information field with a flag.
Bit
Information
０
DSFID
１
AFI
２
VICC memory size
３
IC reference information
４
to
７
For future use
* Information field is stored in order of bit when the bit above is 1.
* For the contents of information flag, refer to 2-4 Memory Map.
UID(SNR)
Indicates UID (SNR) data having read from a Tag.
DSFID
DSFID of a Tag
AFI
AFI of a Tag
VICC memory
size
Defines the memory and block sizes of a Tag.
MSB
LSB
15 13 12
8
7
0
Un-
assigned Block size
Block length
* Block length: the number of blocks of a Tag
（
00h to FFh
＝
1 to 256
）
* Block size: the number of bytes per one block
（
00h to 1Fh
＝
1 to 32
）
<As for I.CODE2 chip: “1B03”>
Block length: “1B”
＝
28 blocks
Block size: “03”
＝
4 bytes
Information fi
eld
IC reference
information
IC reference Information of Tag
* IC reference Information is a form of data defined by IC manufacturer.
Note
This command is in ISO Mode Only. The command is not available for
I.CODE1 mode.
