![background image](http://html.mh-extra.com/html/omron/v680s-series/v680s-series_user-manual_743116176.webp)
174
Se
ct
io
n 7
Me
ss
age
Det
a
ils
RFID System
User's Manual
(Modbus TCP)
Section 7
Host Communications Specifications
Query Format
Response Format
Normal Response
Error Response
Execution Example
Copying Four Words of Data Starting from Word Address 1234 Hex in the RF Tag to the RF Tag in the
Communications Field of the Reader/Writer at IP Address 192.168.1.201
TX: 00000000000FFF10A80000040812340004C0A801C9
RX: 000000000006FF10A8000004
Parameter
Description
Register address
The register address (A800 hex) that specifies the copying query.
Word count
The number of words of data to read (0004 hex)
Byte count
The number of bytes of data to read (08 hex)
Copy address
Specify in 4-digit hexadecimal the start address for writing the copied data in the RF Tag.
Setting range: 0000 to 9FFF hex (Specify a word address.)
Copy word count
Specify in 4-digit hexadecimal the number of words of data to copy.
Setting range: 0001 to 0066 hex (1 to 102)
IP address
The IP address of the copy destination Reader/Writer in 32 bits
Example: C0A801C8 hex (192.168.1.200)
Parameter
Description
Register address
Contains the register address that was specified in the query.
Word count
Contains the word count that was specified in the query.
Parameter
Description
Exception code
For details, refer to
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Byte 8
Byte 9
Byte 10
Byte 11
Byte 12
Transaction identifier
Protocol identifier
Field length
Unit
identifier
Function code
Register address
Word count
Byte count
X
X
0000 hex
000F hex
FF hex
10 hex
A800 hex
0004 hex
08 hex
Byte 13
Byte 14
Byte 15
Byte 16
Byte 17
Byte 18
Byte 19
Byte 20
Copy address
Copy word count
IP address
2 bytes
2 bytes
4 byte (32 bits)
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
identifier
Protocol
identifier
Field length
Unit
identifier
Function code
Register address
Word count
X
X
0000 hex
0006 hex
FF hex
10 hex
A800 hex
0004 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
identifier
Function
code
Exception
code
X
X
0000 hex
0003 hex
FF hex
90 hex
1 byte