User's Manual

Table Of Contents
EXAMPLE
Reads 4 bytes of data from the tag starting at address 0001H. The Family ID
byte is set to zero so all tags will be read. The Anticollision Index is set to 2
so 4 to 8 tags will be expected. The Tag Delay is set to 20 (14H). Three tags
respond with read data.
After the LRP830 sends the acknowledgment, it will send the read data from
the 3 tags.
Copyright © 2000 Escort Memory Systems
LRP830-Series Long-Range Passive Reader/Writer
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Command from Host
MSB LSB Remarks
AAH 8DH Perform Command 8D
00H 02H Tag Family 00/ Index 2
00H 01H Start Address
00H 04H Read Length
00H 14H Tag Delay
FFH FFH Message Terminator
ACK Response from LRP830
MSB LSB Remarks
AAH 8DH Command Echo
FFH FFH Message Terminator
Data response from LRP830
MSB LSB Remarks
AAH 8DH Command Echo/Tag 1
00H 30H Data byte 1/Tag 1
00H 31H Data byte 2/Tag 1
00H 32H Data byte 3/Tag 1
00H 33H Data byte 4/Tag 1
FFH FFH Terminator/ Tag 1
AAH 8DH Command Echo/Tag 2
00H 40H Data byte 1/Tag 2
00H 41H Data byte 2/Tag 2
00H 42H Data byte 3/Tag 2
00H 43H Data byte 4/Tag 2
FFH FFH Terminator/ Tag 2
AAH 8DH Command Echo/Tag 3
00H 34H Data byte 1/Tag 3
00H 35H Data byte 2/Tag 3
00H 36H Data byte 3/Tag 3
00H 37H Data byte 4/Tag 3
FFH FFH Terminator/ Tag 3