User's Manual

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UHF RFID Reader UR - SERIES User Manual v1.14

Parameters of Data[]:

Data[]

ENum

EPC

Mem

WordPtr

Num

Pwd

MaskMem

MaskAdr

MaskLen

MaskData

0xXX

variable

0xXX

4 bytes

0xXX

2 bytes

0xXX

variable

Parameters definition

ENum:

0x00 ~ 0x0f – ENum represents the length of EPC number. The unit of ENum is word, and the

length of EPC should be less than 15 words. In this situation, parameters MaskMen,

MaskAdr, MaskLen, MaskData should all be left empty.

0xff – MaskMem, MaskAdr, MaskLen, MaskData should be provided instead of EPC parameters.

Reader will return a parameter error status in the response frame if other value is delivered in

this field.

EPC: EPC number of the target tag. Length of the EPC depends on the provided EPC number, and

the length value must be an integer. The unit of EPC number is word. During communication, the

most-significant word and the most-significant byte in a word will be transmitted first. It is essential

to provide FULL EPC in this command.

Mem: 1 byte, the type of target memory.

0x00 – reserved memory

0x01 – EPC memory;

0x02 – TID memory;

0x03 – User memory.

All other values are reserved. Reader will return a parameter error status in the response frame if

other value is delivered in this field.

WordPtr: 1 byte, the initial word address of target. For instance, 0x00 represent the read operation

starts from 1st word (the first 16-bit memory area), 0x01 represents operation starts from the 2nd

word, etc.

Num: 1 byte, the amount of words will be read in this operation. Hence 0x00 is not a valid value for

this parameter. Furthermore the value of Num should not exceed 120, i.e. the maximum reading

amount is 120 words. Reader will return a parameter error status in the response frame if a 0 or a

larger than 120 value is delivered in this field.

Pwd: 4 bytes, it is the 4 bytes access password of a tag. From left to right, the first two bytes are the

high bytes of access password, and the last two bytes are the low bytes. The most-significant bit of a

tag 32-bit access password is the most-significant bit in the 1st byte of Pwd (from left to right).

Likewise, the least-significant bit of a tag 32-bit access password is the least-significant bit in the

4th (last) byte of Pwd. Access password will only be used for verification during reserved memory