ZKHY ZK_RFID101, User Manual

Page: 15 / 39

ZK-RFID102 UHF RFID Reader User's Manual V2.0
15
Command:
Len Adr Cmd Data[] CRC-16
0xXX 0xXX 0x02
——
LSB MSB
Data as follows:
Data[]
ENum EPC Mem WordPtr Num Pwd MaskAdr MaskLen
0xXX Variable 0xXX 0xXX 0xXX 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.
Mem: One byte. It specifies whether the Read accesses Password, EPC, TID, or User memory. 0x00:
Password memory; 0x01: EPC memory; 0x02; TID memory; 0x03: User memory. Other values reserved. Other
value when error occurred.
WordPtr: One byte. It specifies the starting word address for the memory read. For example, WordPtr = 00h
specifies the first 16-bit memory word, WordPtr = 01h specifies the second 16-bit memory word, etc.
Num: One byte. It specifies the number of 16-bit words to be read. The value is less then 120, can not be 0.
Otherwise, it returns the parameters error message.
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. Only done the memory set to lock and the Tag’s Access Password is not zero, it needs right Pwd .
In other cases, Pwd can be zero.
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
0xXX 0xXX 0x02 0x00 Word1
，
Word2,…
LSB MSB