Ethernet Units Operation Manual

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Error Log Error Codes Section 10-4
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 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.
FINS Commands for Error
Logs
The following FINS commands can be used to read or clear the error log.
Refer to Section 11 FINS Commands Addressed to Ethernet Units.
10-4 Error Log Error Codes
The error codes are described in the following table. The detailed error code
will provide detailed information on an error.
Command
code
Function
MRC SRC
21 02 ERROR LOG READ
03 ERROR LOG CLEAR
Error
code
Meaning Detailed error code Correction EE-
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
I/O Tables
Create the I/O tables. Saved
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
Units.
Saved
0011 Event timed out MRC SRC Replace the CPU Unit. Saved
0012 CPU Unit memory error 01: Read
error
02: Write
error
03: Routing
table
04: Setup
error
05: CPU Bus
Unit Words
(CIO/DM)
01: Recreate the data specified by
the 2nd byte of the detailed error
code.
02: Clear memory using proce-
dure in the PC operation manual.
Saved
0013 CPU Unit protected 00 00 Remove protection from CPU Unit
memory.
Saved