V740 RFID READER/WRITER, ANTENNA
2005-09, REV0.1
OPERATION MANUAL
27 of 56
©OMRON CORPORATION 2005
1.6 Tag Fundamentals
Tag Memory Structure
Protocols and the tag memory structures supported by
the V740 reader are described below. For additional
information regarding tag operation, refer to each tag
specification.
Class 1 Tags
Class 1 tags contain 96 bits of programmable memory.
It consists of EPC Code, Check Code data. 64 bits of
them are EPC Code, and the first 16 bits of them are
Check Code for the EPC Code.
Byte Bit
Contents
1 0-7
2 8-15
3 16-23
4 24-31
5 32-39
6 40-47
7 48-55
8 56-63
9 64-71
10 72-79
Class 1B Tags
Class 1B tags contain 128 bits of programmable
memory. The format is almost the same as the Class
1 tags. Bit count of EPC code is 96.
Byte Bit
Contents
1 0-7
2 8-15
3 16-23
4 24-31
5 32-39
6 40-47
7 48-55
8 56-63
9 64-71
10 72-79
11 80-87
12 88-95
13 96-103
14 104-111
EPC Code
8bytes (64bits)
Check Code (CRC)
Check Code (CRC)
EPC Code
12bytes (96bits)
