Omron CS1W-ETN21 operation manual Error Log Error Codes, Error Log Table

	Error Log	Section 8-3
Error Log Table		Each error is recorded as one record in an error log table. Up to 64 records
		can be saved. If more than 64 errors occur, the oldest errors will be deleted
		from the error log and the most recent error will be recorded.
		The following information is recorded in the error log table.
		• Main error code (See table later in this section.)
		• Detailed error code (See table later in this section.)
		• Time stamp (from the clock in the CPU Unit)

Error Log Location

FINS Commands for Error Logs

When an error is detected, the error codes and time stamp are recorded in the error log in RAM inside the Ethernet Unit. Serious errors are also recorded in EEPROM. The maximum number of errors that can be saved to EEPROM is 64 for the CS Series and 32 for the CJ Series. The errors recorded in EEPROM will be saved even if the Unit is restarted or power is turned OFF. When the Ethernet Unit is started, the contents of the error log in EEPROM is copied to RAM.

When a FINS command is used to read the error log, the log held in RAM is read. When a FINS command is used to clear the error log, the logs held in both RAM and EEPROM are cleared.

The following FINS commands can be used to read or clear the error log. Refer to SECTION 7 FINS Commands Addressed to Ethernet Units.

Command	Function
code
MRC SRC

2102 ERROR LOG READ

03 ERROR LOG CLEAR

8-3-1	Error Log Error Codes
	The error codes are described in the following table. The detailed error code
	will provide detailed information on an error.
Error	Meaning	Detailed error code		Correction	EE-
code					PROM
		1st byte	2nd byte
0001	Watchdog timer error in CPU Unit	00	00	Replace the CPU Unit.	Saved
0002	CPU Unit service monitor error	Monitor time (ms)		Check the operating environment.	Saved
0006	Other CPU error	Bit 11: Unit not in Registered		Create the I/O tables.	Saved
		I/O Tables
		Other bits are reserved for
		system use.
000F	CPU Unit initialization error	00	00	Replace the CPU Unit.	Saved
0010	Insufficient System Setup Area	00	00	Reduce the number of CPU Bus	Saved
				Units.
0011	Event timed out	MRC	SRC	Replace the CPU Unit.	Saved
0012	CPU Unit memory error	01: Read	03: Routing	01: Recreate the data specified by	Saved
		error	table	the 2nd byte of the detailed error
		02: Write	04: Setup	code.
		error	error	02: Clear memory using proce-
			05: CPU Bus	dure in the PLC operation manual.
			Unit Words
			(CIO/DM)
0013	CPU Unit protected	00	00	Remove protection from CPU Unit	Saved
				memory.

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