ZK-RFID102 UHF RFID Reader User's Manual V2.0
25
EPC:
Be operated tag’s EPC number.
EPC
length according to the decision of the EPC number, EPC
numbers in word units, and must be an integer number of lengths. High word first, the high byte of each word first.
Requirement given here is a complete EPC number.
Pwd:
Four bytes, they are Access Password. The most significant word of Access Password is first, the most
significant byte of word is first. The first bit of 32-bit access password is left, and the last bit of 32-bit access
password is right.
Pwd
must be right tag’s Access Password.
WrdPointer:
Each EEPROM row can be addressed by either of the two related WordPointers:
Either of two WordPointers can address one single User Memory row
WrdPointer
User EEPROM row
0 or 1
0
2 or 3
1
4 or 5
2
6 or 7
3
8 or 9
4
10 or 11
5
12 or 13
6
MaskAdr:
One byte, it specifies the starting byte address for the memory mask. For example,
MaskAdr
=
0x00 specifies the first
EPC
bytes,
MaskAdr
= 0x01 specifies the second
EPC
bytes, etc.
MaskLen:
One byte, it is the mask length. That a Tag compares against the memory location that begins at
MaskAdr
and ends
MaskLen
bytes later.
MaskAdr + MaskLen
must be less the length of ECP number.
Otherwise, it returns the parameters error message.
Notes: That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant.
Respond:
Len
Adr
reCmd
Status
Data[]
CRC-16
0x05
0xXX
0x0e
0x00
——
LSB
MSB
8.2.15 Inventory (Single)
Command:
Len
Adr
Cmd
Data[]
CRC-16
0x04
0xXX
0x0f
——
LSB
MSB
Respond:
Len
Adr
reCmd
Status
Data[]
CRC-16
Num
EPC ID
0xXX
0xXX
0x0f
0x01
0x01
EPC-1
LSB
MSB