User's Manual

Table Of Contents
EXAMPLE:
Reads 4 bytes of data from the tag starting at address 0001H. A timeout of 2
seconds (07D0H = 2000 x 1 msec increments) is set for the completion of
the Block Read All. 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. Three tags
respond with read data.
Copyright © 2000 Escort Memory Systems
LRP830-Series Long-Range Passive Reader/Writer
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Command from Host
MSB LSB Remarks
AAH 85H Perform Command 85
00H 02H Tag Family 00/ Index 2
00H 01H Start Address
00H 04H Read Length
07H D0H Timeout
FFH FFH Message Terminator
Response from LRP830
MSB LSB Remarks
AAH 85H 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 85H 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 85H 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
AAH FFH Termination Packet
03H 08H Ntag/Status
FFH FFH Terminator Message