ZKHY ZK_RFID101, User Manual

Page: 18 / 39

ZK-RFID102 UHF RFID Reader User's Manual V2.0
18
Data as follows:
Data[]
ENum EPC Killpwd MaskAdr MaskLen
0xXX Variable 4Byte 0xXX 0xXX
Parameter Connect:
ENum: EPC length
，
in word units. The length of EPC is less than 15 words, can be 0 or 15. Otherwise, it
returns the parameters error message.
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.
Killpwd: Four bytes, they are Kill Password. The most significant word of Kill Password is first, the most
significant byte of word is first. The first bit of 32-bit Kill Password is left, and the last bit of 32-bit Kill Password
is right. Tag’s whose Kill Password is zero do not execute a kill operation; if such a Tag receives a Kill command
it ignores the command and backscatters an error code
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 0x05 0x00
——
LSB MSB
8.2.6 Lock
The Lock command Lock reversibly or permanently locks a password or an entire EPC, TID, or User memory
bank in a readable/writeable or unreadable/unwriteable state.
Once tag’s password memory establishes to forever may be readable and writable or unreadable and
unwriteable, then later cannot change its read-write protection again. Tag’s EPC memory, TID memory or user
memory, if establishes to forever may be writeable or unwriteable, then later cannot change its read-write
protection again. If sends the command to want forcefully to change the above several states, then the tag will
return to the error code.
When the tag’s memory established in a readable/writeable state, the command must give the Access
Password, so tag’s Access Password is not zero.