User's Manual

COBALT UHF-SERIES CHAPTER 5: COMMAND PROTOCOLS
PAGE 77 OF 140
Response from Controller (Tag Found)
PARAMETER FIELD MSB LSB
Overall Length of Response
(in words)
0x00 0x0C
0xAA
in MSB,
Command Echo
in LSB
0xAA 0xC2
Instance Counter
in MSB,
Node ID Echo
in LSB
<IC> 0x01
Month and Day Timestamp
: (March 19
th
)
0x03 0x13
Hour and Minute Timestamp
: (10:11: AM)
0x0A 0x0B
Seconds Timestamp
in MSB: (:36 seconds)
Additional Data Length
in LSB: (0x0C)
0x24 0x0C
EPC
(bytes 1 & 2)
0xE0 0x04
EPC
(bytes 3 & 4)
0x01 0x00
EPC
(bytes 5 & 6)
0x00 0x2E
EPC
(bytes 7 & 8)
0xEB 0x34
EPC
(bytes 9 & 10)
0x11 0x35
EPC
(bytes 11 & 12)
0x16 0xAD
Response from Controller (Tag Not Found)
PARAMETER FIELD MSB LSB
Overall Length of Response
(in words)
0x00 0x07
Error Flag
in MSB = 0xFF
Error Information Byte
in LSB
0xFF in the LSB indicates that a controller-based
error occurred. Any value other than 0xFF indicates
that a Gateway or Hub-based error occurred (and
identifies the command that was attempted when the
error occurred).
0xFF 0xFF
Instance Counter
in MSB,
Node ID Echo
in LSB
<IC> 0x01
Month and Day Timestamp
: (March 19
th
)
0x03 0x13
Hour and Minute Timestamp
: (10:11: AM)
0x0A 0x0B
Seconds Timestamp
in MSB: (:36 seconds)
Additional Data Length
in LSB: (0x01)
0x24 0x01
Error Code
in MSB (0x07 = “Tag Not Found”)
0x00
in LSB
0x07 0x00