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7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-
6 V780 Co
mm
and
Detail
s
7
7-6
-10 Maintenance Co
mmands: RF C
ommunications Information
Function
This command us used to check the attached information (i.e., the UII (EPC code) and reception level)
that resulted from communications for a single-access command with the immediately preceding RF Tag.
If communications for the immediately preceding single-access command ended in an error,
attached information of 00 hex will be returned.
Command Format
Response Formats
• Normal Response
If there is no Reader/Writer number:
If there is a Reader/Writer number:
7-6-10 Maintenance Commands: RF Communications Information
GET RF TAG ADDITIONAL INFORMATION
Byte-0
Byte-1
Byte-2
Byte-3
Byte-4
Byte-5
Byte-6
Byte-7
Byte-8
Byte-9
Byte-10
Byte-11
Transaction identi-
fier
Protocol identifier
Field length
Unit
identifier
Function
code
Register address
Word count
X
X
0000 hex
0006 hex
FF hex
03 hex
DA00 hex
0021 hex
Parameter
Description
Register address
The register address (DA00 hex) for reading the attached information for RF Tag
communications
Word count
0021 hex: If there is no Reader/Writer number
0022 hex: If there is a Reader/Writer number
Byte-0
Byte-1
Byte-2
Byte-3
Byte-4
Byte-5
Byte-6
Byte-7
Byte-8
Transaction identi-
fier
Protocol identifier
Field length
Unit
identifier
Function
code
Byte
count
X
X
0000 hex
0045 hex
FF hex
03 hex
1 bytes
Byte-9
Byte-10 Byte-11
...
Byte-72
Byte-73
Byte-74
StoredPC
UII (EPC code)
Reception level
2 bytes
62 bytes
2 bytes
Byte-9
Byte-10 Byte-11
...
Byte-72
Byte-73
Byte-74
Byte-75
Byte-76
StoredPC
UII (EPC code)
Reception level
Reader/Writer
number
2 bytes
62 bytes
2 bytes
2 bytes
Parameter
Description
Byte count
42 hex: if there is no Reader/Writer number
44 hex: If there is a Reader/Writer number
StoredPC
Gives the StoredPC data in 4-digit hexadecimal.
The upper 5 bits are the UII (EPC) word length.
UII (EPC code)
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.
Reception level
Gives the reception level in signed hexadecimal.
FFFF to FF9D hex (-1 to -99) [dBm]
Reader/Writer Number
This displays the Reader/Writer number of the reader/writer communicating with the
RF Tag in 4 hexadecimal digits.
* This will be 0000 hex if the Multi-Reader/Writer mode is disabled.
Summary of Contents for V780 Series
Page 22: ...Version Upgrade Information 20 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 60: ...3 Part Names and Functions 3 14 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 152: ...6 Functions 6 76 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 334: ...8 Browser Interface 8 44 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 358: ...9 Troubleshooting 9 24 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 392: ...Appendices A 30 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Page 393: ...I 1 I UHF RFID System V780 series Reader Writer User s Manual Z389 Index ...
Page 397: ......