Omron V680S-HMD63-ETN User Manual page 178

Section 7
Host Communications Specifications
 GET DEVICE NAME
This query reads the name that is set in the Reader/Writer.
 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 X
Parameter
Byte count
Device name
Error Response
Byte 0 Byte 1
Transaction
identifier
X
Parameter
Exception code
 Execution Example
Reading the Device Name When It Is Set to V680S-A001
TX:000000000006FF03B9000020
RX:000000000043FF034056363830532A413030310000000000···00
RFID System
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User's Manual
(Modbus TCP)
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex 0006 hex
The register address (B900 hex) that specifies the device name.
The number of words in the device name to read (0020 hex)
Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Protocol Unit
Field length
identifier identifier
0000 hex 0043 hex FF hex
The number of words in the device name that was read (40 hex)
The device name that was read is given with up to 64 bytes of ASCII characters (up to 63 ASCII
characters plus the end code (00 hex))
If there are fewer than 63 characters, the remaining bytes are filled with 00 hex.
The device name is given with ASCII characters 20 hex (space) to 7E hex (~).
Byte 2 Byte 3 Byte 4
Protocol identifier Field length
X 0000 hex
For details, refer to Exception Code Table in this section.
p.157
Byte 5 Byte 6 Byte 7
Unit Function
identifier code
FF hex 03 hex
Description
Byte 7 Byte 8 Byte 9
Function code Byte count
03 hex 40 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
B900 hex 0020 hex
··· Byte 72
Device name
64 bytes
Byte 8
Exception
code
1 bytes