Omron V780 Series User Manual page 201

Parameter
Information Error code
from RF Tag
StoredPC
1
UII (EPC code)
Options
• Error Response: Command Error
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Exception code
 Execution Examples
Execution for Reading ID Data from Multiple RF Tags with no Option Specification
Example 1: Execution When Four RF Tags Are in the Communications Range
TX: 000000000006FF6400030000
RX: 000000000116FF6400030004
00003000AAAA...AAAA0000...0000:
00003000BBBB...BBBB0000...0000:
00003000CCCC...CCCC0000...0000:
2002000000000000000000...0000:
Example 2: Execution When an RF Tag Is Not in the Communications Range (Exception Code: 04
Hex (Failure in Device))
TX: 000000000006FF6400030000
RX: 000000000003FFE404
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
For details, refer to 9-2-1 Command Errors on page 9-4.
Gives the StoredPC data in 4-digit hexadecimal.
The upper 5 bits are the UII (EPC) word length.
Gives the Tag-specific information according to Gen2 standards.
All bytes of the UII (EPC code) section that exceed the UII (EPC) word
length in the StoredPC are filled with 00 hex.
These parameters may be omitted depending on the option value.
Reception The reception level is attached in signed 4-digit hexadecimal.
level
FFFF to FF9D hex (-1 to -99 [dBm])
Reader/Writer This displays the Reader/Writer number of the reader/writer communi-
Number cating with the RF Tag in 4 hexadecimal digits.
0000 hex to 0007 hex
Byte-2 Byte-3 Byte-4
Protocol identifier Field length
0000 hex 0003 hex
For details, refer to Exception Code on page 7-7 under 7-2-3 Response Format for
Error Completion on page 7-7.
7 Modbus/TCP Communications
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex E4 hex
Description
RF Tag A error code + StoredPC + UII (EPC code) (The
six words of the UII (EPC) length are all AAAA hex.)
RF Tag B error code + StoredPC + UII (EPC code) (The
six words of the UII (EPC) length are all BBBB hex.)
RF Tag C error code + StoredPC + UII (EPC code) (The
six words of the UII (EPC) length are all CCCC hex.)
RF Tag D error code (2002 hex (RF Tag communications
failure))
Byte-8
Excep-
tion code
1 byte
7 - 49
7