Omron V680 Series User Manual page 211

 GET COMMUNICATION DIAGNOSTIC SETTING
This query gets the communication diagnostic setting. The communications diagnostic information are
cleared after the Reader/Writer is rebooted.
 Query Format
Byte 0 Byte 1 Byte 2 Byte 3
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Register address
Word count
 Response Format
Normal Response
Byte 0 Byte 1 Byte 2 Byte 3
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Byte count
Communication
diagnostic setting
Error Response
Byte 0 Byte 1 Byte 2
Transaction
Protocol identifier
identifier
X X 0000 hex
Parameter
Exception code
 Execution Example
When Communication Diagnostic Is Enabled
TX: 000000000006FF03B3000001
RX: 000000000005FF03020001
Byte 4 Byte 5 Byte 6
Unit
Field length Function code
identifier
0006 hex FF hex
The register address (B300 hex) that specifies setting communication diagnostic
The number of words in the communication diagnostic setting to read (0001 hex)
Byte 4 Byte 5 Byte 6
Unit
Field length Function code
identifier
0005 hex FF hex
The number of bytes in the communication diagnostic setting that was read (02 hex)
Contains the communication diagnostic setting that was read in 4-digits hexadecimal.
Disabled: 0000 hex (default), Enabled: 0001 hex
Byte 3 Byte 4 Byte 5
Field length
0003 hex
For details, refer to Exception Code Table in this section.
p.167
Host Communications Specifications
Byte 7 Byte 8 Byte 9 Byte 10
Register address Word count
03 hex B300 hex 0001 hex
Description
Byte-8 Byte-9 Byte-10
Byte 7
Communication
Byte count
diagnostic setting
03 hex 02 hex 2 bytes
Description
Byte 6 Byte 7 Byte 8
Unit Function Exception
identifier code code
FF hex 83 hex 1 byte
Description
Section 7
Byte 11
RFID System
User's Manual
(Modbus TCP)
209