User's Manual

UHF RFID Reader UR - SERIES User Manual v1.14
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(uncompleted) inventory status to host. Reader will then wait for the next command from host.
Default inventory time is 2s, it can be modified by using reader customised command "modify
reader inventory time" (refer to chapter 8.4.4). The valid range of inventory time is from 3*100ms
to 255*100ms (the actual responding time may slightly larger than the setting value and this
difference will varies from 0 up to 75ms).
Note: an unreasonable short inventory time setting may cause tag inventory failure.
Command frame:
Len
Adr
Cmd
Data[]
CRC-16
0xXX
0xXX
0x01
——
LSB
MSB
Parameters of Data[]:
Data[]
QValue
Session
MaskMem
MaskAdr
MaskLen
MaskData
AdrTID
LenTID
0xXX
0xXX
0xXX
2 bytes
0xXX
Variable
0xXX
0xXX
Data[]
Target
Ant
Scantime
0xXX
0xXX
0xXX
Parameters definition
QValue: 1 byte.
bit7: Statistic data packet flag.
0 – after inventory，DO NOT deliver statistic data packet of inventory process;
1 – after inventory，deliver statistic data packet of inventory process
bit6: strategy indicator.
0 – general strategy;
1 – special strategy.
bit5: FastID inventory indicator.
0 – disable Impinj FastID function;
1 – enable Impinj FastID function.
bit4 ~ bit0: the original Q-value of the EPC tag inventory, the setting of Q-value should follow the
rule: 2
Q
≈ total amount of tags within the effective field. The range of Q-value is 0 ~ 15,
if other value is delivered in this field, reader will return a parameter error status in the
response frame.
Session: 1 byte, the Session-value of the EPC tag inventory.
0x00 – apply S0 as Session value;
0x01 – apply S1 as Session value;
0x02 – apply S2 as Session value;
0x03 – apply S3 as Session value;