Omron V680 Series User Manual page 174

Section 7
Host Communications Specifications
 READ ID
This query reads the ID code from an RF Tag in the communications field.
 Query Format
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Register address
Word count
 Response Format
Normal Response
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Byte count
Read data
Error Response
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Exception code
 Execution Example
Reading the UID Data (1122334455667788 hex) from an RF Tag
TX: 000000000006FF03A0000004
RX: 00000000000BFF03081122334455667788
RFID System
172
User's Manual
(Modbus TCP)
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex 0006 hex
The register address (A000 hex) that specifies reading the ID.
The number of words of data to read (0004 hex)
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex
The number of bytes in the UID data that was read from the RF Tag (08 hex)
The UID data that was read from the RF Tag is attached.
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex
For details, refer to Exception Code Table in this section.
p.167
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
FF hex 03 hex
Description
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
000B hex FF hex 03 hex
Description
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
0003 hex FF hex 83 hex
Description
Byte 8 Byte 9 Byte 10 Byte 11
Register address Word count
A000 hex 0004 hex
Byte 8 Byte 9 ··· Byte 16
Byte
Read data
count
08 hex 8 bytes
Byte 8
Exception
code
1 byte