Omron CQM1H-CLK21 - Manual (Page 337)

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Error Log Section 9-3
Time Information
The time is recorded in BCD with one byte each for the year (the rightmost
two digits), month, day, hour, seconds, and minutes of the time the error
occurred.
Note 1. The PLC’s time information can be read and used in the Controller Link
Unit. When the time cannot be read from the PLC, all error log times will
but 0. This can occur for PLC startup errors, Unit No. errors, CPU Unit er-
rors, or PLC model errors. When error logs like these are read from the
Controller Link Support Software, they will be dated 0 s, 0 min, 0 hr, 0 day,
0 month, 2000.
2. When replacing the battery for CS/CJ-series PLCs, it will be necessary to
switch the power supply ON and reset the internal clock.
If the internal clock is not reset, time information in the error log will not be
recorded correctly.
3. The time information will be all zeros for CQM1H-series PLCs unless a
Memory Cassette with a clock is mounted in the CPU Unit. The time infor-
mation will be all zeros in the year 2000 if it is read from Support Software.
9-3-2 Error Codes
The following table lists the error codes (in 4-digit hexadecimal) and the con-
tents of the errors.
Error
code
Contents Detail code Correction Written to
EEPROM
Applicable
PLC
1st byte 2nd byte
0001
Hex PLC watchdog timer error 00 Hex 00 Hex Replace PLC’s CPU
Unit. Yes All
0002
Hex PLC service monitor error Monitor time (unit: ms) Check operating
environment. Yes CV, CS/CJ
0003
Hex PLC shared RAM error 01 Hex:
Cyclic
02 Hex:
Event
04 Hex:
CPU bus link 00 Hex Check operating
environment. Yes CV
0004
Hex CPU Bus Unit ID number error 00 Hex 00 Hex Check I/O
Connecting Cables. Yes CV, CS/CJ
0005
Hex Unit number error Unit set
value The value
recognized
by the CPU
Unit Check the Unit
number setting. Rec-
reate the I/O table. Yes CV
0006
Hex CPU Unit error Bit 11:No relevant Unit in
I/O table.
Bit 12: Hardware test unit
number recognized.
Bit 13: Incorrect unit num-
ber.
Bit 14: Duplicated unit
number.
Check the Unit num-
ber settings. Recre-
ate the I/O table. Yes CV, CS/CJ
000D
Hex PLC model error Not set Refer to 1-2-4 Con-
troller Link Unit Mod-
els and PLCs and
PLCs and check the
PLC model. Yes C200HX/HG/
HE