System Command; System Read (Sr): Iso Mode Only - Omron V720S Series Operation Manual

System Command

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
1 2
Tag type
System method
<Response Format>
STX Node No..
1 2
Response code
Information flag
UID(SNR)
DSFID
AFI
VICC memory
size
IC reference
information
Tag System
"SR"
type method"00"
2 1 2
Specified a Tag type
A: I.CODE2 chip
Specified the kind of system information.
"00" fixed.
Retry Response code
Command code
"00"
flag "SR"
1 2 2
00:normal completion
For other response codes, refer to 5-2-4 Response code List.
Indicates information in the Information field with a flag.
Bit
０
１
２
３
４to７
* 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.
Indicates UID (SNR) data having read from a Tag.
DSFID of a Tag
AFI of a Tag
Defines the memory and block sizes of a Tag.
MSB
15 13
Un-
assigned
* 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
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.
ETX BCC
1 1
Information flag UID(SNR)
2 16
Information
DSFID
AFI
VICC memory size
IC reference information
For future use
12 8 7
Block size Block length
Section 5-4
Information ETX BCC
field
2to10 1 1
LSB
0
5-21