RFID Communications

Example

Reads two bytes of data from the tag starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 ms increments) is set for the completion of the SN Read All. The Family ID byte is set to zero, so all tags will be read. Two tags respond with read data.

Command from Host

MSB

LSB

Remarks

AAH

82H

Perform Command 82

 

 

 

00H

00H

Tag Family 00/Reserved

 

 

 

00H

01H

Start Address

 

 

 

00H

02H

Read Length

 

 

 

07H

D0H

2 second Timeout

 

 

 

FFH

FFH

Message Terminator

 

 

 

Response from Controller

MSB

LSB

Remarks

AAH

82H

Command Echo/Tag 1

 

 

 

00H

10H

SN byte 1/Tag 1

 

 

 

00H

43H

SN byte 2/Tag 1

 

 

 

00H

6CH

SN byte 3/Tag 1

 

 

 

00H

00H

SN byte 4/Tag 1

 

 

 

00H

00H

SN byte 5/Tag 1

 

 

 

00H

01H

SN byte 6/Tag 1

 

 

 

00H

04H

SN byte 7/Tag 1

 

 

 

00H

E0H

SN byte 8/Tag 1

 

 

 

00H

30H

Data byte 1/Tag 1

 

 

 

00H

31H

Data byte 2/Tag 1

 

 

 

FFH

FFH

Terminator/ Tag 1

 

 

 

AAH

82H

Command Echo/Tag 2

 

 

 

00H

08H

SN byte 1/Tag 2

 

 

 

00H

0AH

SN byte 2/Tag 2

 

 

 

00H

81H

SN byte 3/Tag 2

 

 

 

00H

00H

SN byte 4/Tag 2

 

 

 

00H

00H

SN byte 5/Tag 2

 

 

 

00H

01H

SN byte 6/Tag 2

 

 

 

00H

04H

SN byte 7/Tag 2

 

 

 

00H

E0H

SN byte 8/Tag 2

 

 

 

00H

40H

Data byte 1/Tag 2

 

 

 

00H

41H

Data byte 2/Tag 2

 

 

 

FFH

FFH

Terminator/ Tag 2

 

 

 

AAH

FFH

Command end

 

 

 

02H

08H

Ntags/Status

 

 

 

FFH

FFH

Message Terminator

 

 

 

69

LRP2000 Passive Reader/Writer

Page 74
Image 74
Escort LRP2000 manual 6CH, Aah Ffh