RFID Interface
48
LRP820S-Series Long-Range Passive Reader/Writers
Block
Addresses
2
The first Byte gives the address of the first
block. The second Byte gives the number of
blocks to be interrogated. Only used with
command 14H.
Timeout
2
0001H to FFFEH milliseconds
Data
varies
Data which will be written to a tag. Each byte
is included in the LSB of a two-Byte word.
Terminator
1
FFFFH
Field
Number of
Bytes
Content
Header
1
AAH. Always the MSB of the first word of an
ABX Standard command
Command
1
Command Code - LSB of the first word
Family code
1
LSB 00H to address all tags in field
Reserved
1
Reserved for future use, set to 00H
Start Address
2
One word gives the first Byte of tag memory to
be accessed
Number of Bytes 2
One word gives the number of contiguous
bytes to be accessed - Not used with
commands 87H, 88H, 8EH, 8BH, 8CH
Block Addresses 4
The first word gives the address of the first
block. The second word gives the number of
blocks to be interrogated - Only used with
command 8EH
Timeout
2
0001H to FFFEH milliseconds
Data
varies
Data which will be written to a tag. Each byte is
included in the LSB of a two-Byte word.
Terminator
2
FFFFH
Field
Number
of Bytes
Content
