10-4SectionError Log Error Codes
172
• 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)
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 errors recorded in EEPROM will be saved even if the Unit is re-
started 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 11 FINS Commands Addressed to Ethernet Units.
Command
code
Function
MRC SRC
21
02 ERROR LOG READ
03 ERROR LOG CLEAR
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.
Error Meaning
Detailed error code
Correction EE-
code
1st byte 2nd byte
PROM
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 procedure
in the PC operation manual.
Saved
0013 CPU Unit protected 00 00 Remove protection from CPU
Unit memory.
Saved
Error Log Location
FINS Commands for
Error Logs
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