Omron V680S-HMD63-ETN User Manual page 107

 Communications Error Log
Each record in the communications error log consists of 24 bytes in the format that is shown in the
following table. Up to eight records are recorded. To read the communication error log, either send a
GET COMMUNICATIONS ERROR LOG query or read it from a browser.
Refer to GET COMMUNICATIONS ERROR LOG in Section 7 Host Communications Specifications for details on the GET
COMMUNICATIONS ERROR LOG query.
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Bytes 1 to 4
Operating time when error occurred
4 bytes
Byte 13 Byte 14
Function code Reserved. Register address
1 byte 1 byte
 Operating Time When Error Occurred
This is the operating time when the Reader/Writer returned the error response to the host device after
the error occurred.
 IP Address of Query Source
This is the IP address of the host device that sent the query.
 Transaction Identifier
This is the transaction identifier of the query that was received by the Reader/Writer.
 Function Code
This is the function code in the query that was received by the Reader/Writer.
 Register Address
This is the register address in the query that was received by the Reader/Writer.
 Exception Code
This is the exception code in the response that was returned by the Reader/Writer.
 Error Code
This code identifies the nature of the error.
Refer to Error Codes in Section 7 Host Communications Specifications for the meanings of the error codes.
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 Error Source Device Information
If the error occurs in the Reader/Writer after receiving a query from the host device, the error source
device information is set to 0000 hex. If the COPY DATA query is sent and the error occurred at the
copy destination Reader/Writer, the error source device information is set to 0001 hex.
 Reserved
Reserved fields are always 00 hex.
Bytes 5 to 8
IP address of query source
4 bytes
Bytes 15 and 16 Byte 17
Exception code
2 bytes 1 byte
Bytes 9 to 10
Transaction identifier
2 bytes
Bytes 18 to 20 Bytes 21 and 22
Reserved. Error code
3 bytes 2 bytes
Section 6
Functions
Bytes 11 to 12
Reserved.
2 bytes
Bytes 23 and 24
Error source device
information
2 bytes
RFID System
105
User's Manual
(Modbus TCP)