User's Manual
Table Of Contents
- Modbus/TCP Communications
- 7-1 Outline
- 7-2 Message Formats
- 7-3 RF Communications Command Options
- 7-4 Communications Procedure
- 7-5 Commands
- 7-6 V780 Command Details
- 7-6-1 Single-access Communications Commands
- 7-6-2 Multiaccess Communications Commands
- 7-6-3 Modbus Expansion Communications Commands
- 7-6-4 Reader/Writer Control Commands
- 7-6-5 Reader/Writer Setting Commands: Network Settings
- 7-6-6 Reader/Writer Setting Commands: Communications Settings
- 7-6-7 Reader/Writer Setting Commands: Device Settings
- 7-6-8 Maintenance Commands: Device Information
- 7-6-9 Maintenance Commands: Log Information
- 7-6-10 Maintenance Commands: RF Communications Information
7 Modbus/TCP Communications
7 - 6
UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
Specify the data that is relevant to the function code.
The format of the data depends on the function code.
The value that was specified in the command is set.
This field is always 0000 hex.
The number of bytes inclusively from the unit identifier through the end of the data is set.
This field is always FF hex.
The value of the function code that was specified in the command is set.
The data that is relevant to the function code is set.
The format of the data depends on the function code.
Data
7-2-2 Response Format for Normal Completion
Byte-0 Byte-1 Byte-2 Byte-3 Byte-4 Byte-5 Byte-6 Byte-7 Byte-8 Byte-9 … Byte-n
Transaction iden-
tifier
Protocol identifier Field length
Unit
identifier
Func-
tion
code
Data
XXXX hex Always 0000 hex. XXXX hex
Always
FF hex.
03 hex,
10 hex,
or 64
hex
XX...XX hex
X: Any value, n: 9,215 max.
Transaction Identifier
Protocol Identifier
Field Length
Unit Identifier
Function Code
Data
Range included in the field length.