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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
-3 Modbu
s Expansion C
ommunications Commands
• Error Response: RF Tag Communications Error
• Error Response: Command Error
Execution Examples
Reading 2,048 Words of Data Starting from Word Address 0000 Hex (User Area) in the RF Tag with
No Options
Example 1: Execution When an RF Tag Is Not in the Communications Range (Read Data:
1111222233334444…FFFF Hex)
TX: 00000000000AFF640001300008000000
RX: 000000000806FF64000100001111222233334444…FFFF
Example 2: Execution When an RF Tag Is Not in the Communications Range (Error Code: 2001 Hex
(RF Tag Missing Error))
TX: 00000000000AFF640001300008000000
RX: 000000000006FF6400012001
Parameter
Description
Field length
0008 to 1006 hex + Option size
• For details on option sizes, refer to
Read data
The data that was read from the RF Tag is attached. (Range: 0001 to 0800 hex,
in words)
Options
These parameters may be omitted depending on the option value.
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
The reception level is attached in signed 4-digit hexadecimal.
FFFF to FF9D hex (-1 to -99 [dBm])
Diagnostic results
Gives the diagnostic results in 4-digit hexadecimal.
For details, refer to
CATIONS DIAGNOSTIC INFORMATION
Reader/Writer
Number
This displays the Reader/Writer number of the reader/writer communicating
with the RF Tag in 4 hexadecimal digits.
0000 hex to 0007 hex
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 iden-
tifier
Protocol identifier
Field length
Unit
identifier
Function
code
Subfunction code
Error code
X
X
0000 hex
0006 hex
FF hex
64 hex
0001 hex
2 bytes
Parameter
Description
Error code
For details, refer to
Byte-0
Byte-1
Byte-2
Byte-3
Byte-4
Byte-5
Byte-6
Byte-7
Byte-8
Transaction identifier
Protocol identifier
Field length
Unit identifier
Function code
Exception code
X
X
0000 hex
0003 hex
FF hex
E5 hex
1 byte
Parameter
Description
Exception code
For details, refer to
Содержание V780 Series
Страница 22: ...Version Upgrade Information 20 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 60: ...3 Part Names and Functions 3 14 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 70: ...4 Installation and Connections 4 10 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 76: ...5 Preparations for Communications 5 6 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 152: ...6 Functions 6 76 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 334: ...8 Browser Interface 8 44 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 358: ...9 Troubleshooting 9 24 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 362: ...10 Maintenance and Inspection 10 4 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 392: ...Appendices A 30 UHF RFID System V780 series Reader Writer User s Manual Z389 ...
Страница 393: ...I 1 I UHF RFID System V780 series Reader Writer User s Manual Z389 Index ...
Страница 397: ......