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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
-2 Multia
ccess Co
mmunications Commands
• Error Response
Execution Examples
Specifying Getting the Results of Multiaccess Reading of the IDs by the Reader/Writer with No
Options
There are three RF Tags in the communications range.
Getting the First Results (Getting the Communications Results for RF Tag A)
TX: 000000000006FF0391000022
RX: 000000000047FF0344000300003000AAAA…AAAA0000…0000
*Number of RF Tags: 3, RF Tag A error code + St UII (EPC code) (The six words of the UII
(EPC) length are all AAAA hex.)
Getting the Second Results (Getting the Communications Results for RF Tag B)
TX: 000000000006FF0391000022
RX:000000000047FF0344000200003000BBBB…BBBB0000…0000
*Number of RF Tags: 2, RF Tag A error code + St UII (EPC code) (The six words of the UII
(EPC) length are all BBBB hex.)
Error code
Gives the RF Tag access results in 4-digit hexadecimal.
0000 hex: Normal end
Not 0000 hex: Error code
• For details on the error codes, refer to
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.
Options
This section may be omitted depending on the option value for the SET
MULTIACCESS ID READ command.
Reception level
The reception level is attached in signed 4-digit hexadecimal.
FFFF to FF9D hex (
−
1 to -99 [dBm])
Reader/Writer
Number
This displays the Reader/Writer number of the reader/writer communicat-
ing 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
Transaction identi-
fier
Protocol identifier
Field length
Unit
identifier
Function
code
Excep-
tion code
X
X
0000 hex
0003 hex
FF hex
83 hex
1 byte
Parameter
Description
Exception code
For details, refer to
Parameter
Description
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: ......