Omron V680S-HMD63-ETN User Manual page 182

Section 7
Host Communications Specifications
 GET WEB PASSWORD
This query reads the Web server password 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 Web Password When It Is Set to "password"
TX: 000000000006FF03BB000008
RX: 000000000013FF031070617373776F72640000000000000000
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 (BB00 hex) that specifies the Web password
The number of words in the Web password to read (0008 hex)
Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Protocol Unit
Field length
identifier identifier
0000 hex 0013 hex FF hex
The number of bytes in the Web password that was read (10 hex)
The Web password that was read is given with up to 16 bytes of ASCII characters (up to 15 ASCII
characters plus the end code (00 hex)).
If there are fewer than 15 characters, the remaining bytes are filled with 00 hex.
The Web password 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 10 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
BB00 hex 0008 hex
··· Byte 24
Device name
16 bytes
Byte 8
Exception
code
1 byte