Error Log Function; Error Log Data Specifications; Error Log Registration; Fins Commands For Error Logs - Omron SYSMAC CJ1W-EIP21 Operation Manual

Error Log Function

14-4 Error Log Function

14-4-1 Error Log Data Specifications

Structure of Each Record

14-4-2 Error Log Registration

Error Log Storage Area
Error Log Overflows
Power Interruptions when
Saving to EEPROM

14-4-3 FINS Commands for Error Logs

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Errors detected by the EtherNet/IP Unit or built-in EtherNet/IP port are stored
in the error log along with the date and time of their occurrence. The error log
can be read and cleared from the Network Configurator.
Some error log records are cleared when the CPU Unit's power goes OFF,
and other records are not cleared.
Each error is recorded as one record in the error log.
Item
Record length 10 bytes/record
Number of records 64 records max.
Data type Binary (time information: BCD)
Bit 15
Error code
Detail code
Minutes
Day of month
Year
When an error occurs, information on the error and the time stamp are stored
in the Unit's internal RAM as an error log record. Serious errors are recorded
in non-volatile EEPROM as well as RAM. The time read from the CPU Unit
during cyclic servicing is used for the time stamp.
The error log records stored in EEPROM are copied to RAM when the Unit
starts operating, so these records are retained even when the Unit's power is
turned OFF or the Unit is restarted.
When the error log is read, the error log records in RAM are read. When the
error log is cleared, the error log records in both RAM and EEPROM are
erased.
The error log can record up to 64 records. If another error occurs when the log
is full, the oldest record will be erased to make room for the new error record.
If the power supply is interrupted or the Unit is restarted while the error log is
being written to EEPROM, the error log may be corrupted. When the Unit
starts, it performs a checksum test on the error log data read from EEPROM
to detect corrupted data.
The following FINS commands can be sent to the EtherNet/IP Unit or built-in
EtherNet/IP port to read or clear the error log.
Command code
MRC SRC
21 02 ERROR LOG READ
03 ERROR LOG CLEAR
For details, refer to Appendix E FINS Commands Addressed to EtherNet/IP
Units or Built-in EtherNet/IP Ports.
Specifications
Bit 00
Seconds
Hour
Month
Function name
Section 14-4