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7 - 7
7 Modbus/TCP Communications
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
7-
2 Messag
e Fo
rmat
s
7
7-2
-3 Response F
ormat for
Erro
r Completion
The value that was specified in the command is set.
This field is always 0000 hex.
This field is always 0003 hex.
This field is always FF hex.
The value of the function code that was specified in the command plus 80 hex is set.
A code that provides information on the error is set.
You can use the error code to identify the error that was detected by the Reader/Writer. The exception
code and error code are related as given below. Refer to the most recent command error information or
command error log to check details on the error using the error code.
7-2-3
Response Format for Error Completion
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 identi-
fier
Function
code
Exception
code
XXXX hex
Always 0000 hex.
Always 0003 hex.
Always FF
hex.
83 hex, 90
hex, or E4
hex
XX hex
X: Any value
Transaction Identifier
Protocol Identifier
Field Length
Unit Identifier
Function Code
Exception Code
Exception
code
Exception code meaning
V780 error code
01 hex
Illegal function
1001 hex
Frame length error
1002 hex
Frame header error
1003 hex
Unknown command error
02 hex
Illegal data address
1004 hex
Command format error
03 hex
Illegal data value
1005 hex
Command parameter error
Range included in the field length.
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: ......