User Manual

CHAPTER 7: RFID COMMANDS
COBALT HF RFID CONTROLLERS OPERATOR’S MANUAL
P/N: 17-1320 REV 01 (03-06) PAGE 74 OF 116
Command 05 instructs the controller to retrieve a specific number of bytes of data from a
contiguous (sequential) area of an RFID tag’s memory.
When the Start Address is set to zero (0x0000), the controller will start reading at the
beginning (or first accessible byte) of the tag. The minimum Read Length is one byte, the
maximum is the entire read/write address space of the tag. Timeout Value is measured in
1-millisecond increments and can have a value of 0x0001 to 0xFFFE (1 to 65,534
milliseconds). If the Read Length exceeds beyond the last available tag address, the
controller will return an error code.
C
OMMAND 05 (READ D ATA)-ABX FAST C OMMAND S TRUCTURE
PARAMETER FIELD CONTENT
Header
0x02, 0x02
Command Size
0x0007
Command ID
1-byte Command ID (0x05).
Start Address
2-byte value for the starting read
address.
Read Length
2-byte value for the number of bytes to
read.
Timeout Value
2-byte value measured in 1-ms units
(0x0001 – 0xFFFE).
Checksum
Optional
Terminator
0x03
COMMAND 05:
READ DATA