Section 2 Functions
Error Logs
The Reader/Writer manages errors that occur during operation in logs. The error logs are saved until
the power supply to the Reader/Writer is turned OFF. You can read the error logs by sending
commands from the host device or by using a browser.
The following logs are saved.
System Error Log
Each record in the system error log consists of 16 bytes in the format that is shown in the following
table. Up to eight records are recorded. To read the system error log, either send a GET SYSTEM
ERROR LOG command or read it from a browser.
Refer to Error Codes in Section 5 Host Communications Specifications for detailed information on error codes, attached
information 1, and attached information 2.
p.112
Command Error Log
Each record consists of 16 bytes in the format that is shown in the following table. Up to 16 records are
recorded. To read the command error log, either send a GET COMMAND ERROR LOG command or
read it from a browser.
Errors that occur during RF Tag communications from a browser are not recorded in the command error log. Only errors
that occur in command execution for tag data links are recorded.
Refer to Error Codes, Device Information, and Communications Diagnostics Results in Section 5 Host Communications
Specifications for detailed information on error codes, response information 1, and response information 2.
p.112, p.114
Category Description
System error log This log contains up to eight fatal errors that were detected by the Reader/Writer. They are given in
chronological order. If more than eight system errors occur, the oldest records are deleted in order.
Command error log This log contains up to 16 errors detected for command execution for tag data links. They are given in
chronological order.
If more than 16 errors occur, the oldest errors are deleted in order.
Field Size Description
Operating time
4 bytes
This is the operating time of the Reader/Writer when the error occurred.
* The operating time is the elapsed time in milliseconds from when the Reader/Writer
was started.
Error code
4 bytes
This code is used to identify the error.
Attached information 1
4 bytes
These codes provide additional information on the error.
Attached information 2
4 bytes
Field Size Description
Operating time
4 bytes
Gives the operating time of the Reader/Writer when the error occurred.
* The operating time is the elapsed time in milliseconds from when the Reader/Writer
was started.
IP address of device that
sent the command
4 bytes
Gives the IP address of the host device that sent the command.
Command code
2 bytes
Gives the command code of the command received by the Reader/Writer.
Error code
2 bytes
Gives the error code from the response returned by the Reader/Writer.
Response information 1
2 bytes
Gives response information 1 from the response returned by the Reader/Writer.
Response information 2
2 bytes
Gives response information 2 from the response returned by the Reader/Writer.
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