Omron V780 Series User Manual page 203

Parameter
Field length
Number of RF Tags
Information Error code
from RF Tag
Read data
1
Options
• Error Response: Command Error
Byte-0 Byte-1
Transaction identi-
fier
X X
Parameter
Exception code
 Execution Examples
Reading 4 Words of Data Starting from Word Address 0123 Hex (User Area) in Multiple RF Tags
with No Options
Example 1: Execution When Four RF Tags Are in the Communications Range
TX: 00000000000AFF640004312300040000
RX: 00000000002EFF6400040004
0000AAAAAAAAAAAAAAAA:
0000BBBBBBBBBBBBBBBB:
0000CCCCCCCCCCCCCCCC:
2002000000000000000000:
Example 2: Execution When an RF Tag Is Not in the Communications Range (Exception Code: 04
Hex (Failure in Device))
TX: 00000000000AFF640004312300040000
RX: 000000000003FFE404
UHF RFID System V780-series Reader/Writer User's Manual (Z389)
000A to 2106 hex + (Option size × m)
• For details on option sizes, refer to 7-3 RF Communications Com-
mand Options on page 7-10.
Gives the number of RF Tags that were detected in 4-digit decimal.
0000 to 0040 hex (0 to 64)
For details, refer to 9-2-1 Command Errors on page 9-4.
The data that was read from the RF Tag is attached.
The bytes that exceed the word count will be filled with 00 hex.
This section may be omitted depending on the option value for the
SET MULTIACCESS ID READ command.
StoredPC Gives the StoredPC data in 4-digit hexadecimal.
The upper 5 bits are the UII (EPC) word length.
UII (EPC Gives the Tag-specific information according to Gen2 standards.
code)
All bytes of the UII (EPC code) section that exceed the UII (EPC) word
length in the StoredPC are filled with 00 hex.
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.
RF Tag A error code + Read data (4 words, all AAAA hex)
RF Tag B error code + Read data (4 words, all BBBB hex)
RF Tag C error code + Read data (4 words, all CCCC hex)
RF Tag D error code (2002 hex (RF Tag communications fail-
7 Modbus/TCP Communications
Description
Byte-5 Byte-6 Byte-7
Unit Function
identifier code
FF hex E4 hex
Description
ure))
Byte-8
Excep-
tion code
1 byte
7
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