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7 Modbus/TCP Communications
7 - 90
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
Function
This command reads the access password that is set for RF Tag communications in the
Reader/Writer.
Command Format
Response Formats
• Normal Response
• Error Response
Execution Examples
Execution When the Reader/Writer Access Password Is Set to “12345678 hex”
TX: 000000000006FF03C4000002
RX: 000000000007FF030412345678
GET ACCESS PASSWORD
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
C400 hex
0002 hex
Parameter
Description
Register address
The register address (C400 hex) that specifies reading the access
password
Word count
The number of words in the access password to read (0002 hex)
Byte-0
Byte-1
Byte-2
Byte-3
Byte-4
Byte-5
Byte-6
Byte-7
Byte-8
Byte-9
...
Byte-12
Transaction identi-
fier
Protocol identifier
Field length
Unit
identifier
Function
code
Byte
count
Access password
X
X
0000 hex
0007 hex
FF hex
03 hex
04 hex
4 bytes
Parameter
Description
Default setting
Byte count
The number of bytes in the access password (04 hex)
Access password
Gives the access password to use for RF Tag communications in
8-digit hexadecimal.
The specified access password is stored in EEPROM memory in
the Reader/Writer.
If the access password in the RF Tag is not all zeros, the access
password that is stored in EEPROM memory must be used to exe-
cute LOCK, ID WRITE, DATA READ, or DATA WRITE commands.
00000000 hex
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 iden-
tifier
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
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: ......