Omron V680 Series User Manual page 165

 Write Holding Register (10 Hex)
This function code is used to write continuous holding registers.
 Example: Writing "1111222233334444" to Four Words Starting from Address
1234 Hex in the RF Tag
Query
No. Field name
1 Transaction identifier upper byte
2 Transaction identifier lower byte
3 Protocol identifier upper byte
4 Protocol identifier lower byte
5 Field length upper byte
6 Field length lower byte
7 Unit identifier
8 Function code
9 Register address upper byte (See note 1.)
10 Register address lower byte (See note 1.)
11 Word count upper byte
12 Word count lower byte
13 Byte count
14 Write data 1 upper byte
15 Write data 1 lower byte
16 Write data 2 upper byte
17 Write data 2 lower byte
18 Write data 3 upper byte
19 Write data 3 lower byte
20 Write data 4 upper byte
21 Write data 4 lower byte
The address in the RF Tag is the same as the register address.
Response
No. Field name
1 Transaction identifier upper byte
2 Transaction identifier lower byte
3 Protocol identifier upper byte
4 Protocol identifier lower byte
5 Field length upper byte
6 Field length lower byte
7 Unit identifier
8 Function code
9 Register address upper byte (See note 1.)
10 Register address lower byte (See note 1.)
11 Word count upper byte
12 Word count lower byte
Host Communications Specifications
Example
(hex)
00
00
00
00
00
0F
FF
10
12
RF Tag address = Register address
34
00
04
08
11
11
22
22
33
33
44
44
Example
(hex)
00
00
00
00
00
06
FF
10
12
RF Tag address = Register address
34
00
04
Section 7
RFID System
163
User's Manual
(Modbus TCP)