Chapter 12 Troubleshooting
12-5
12.2
Troubleshooting for CPU Modules
Check the LED indicators and the error codes from the CPU module and refer to the following table for troubleshooting. V
in the Log column indicates the error is recorded in the log. X in the Log column indicates the error is not recorded in the
log. H in the Log column indicates whether or not you can set recording the error in the log in HWCONFIG.
12.2.1
ERROR LED Indicators Are ON
Error
Code
Description Solution Flag Log
000A Scan timeout
1. Check the setting of the watchdog timer in HWCONFIG.
2. Check whether the program causes a long scan time
SM8 V
12.2.2
ERROR LED Indicators Blinking Every 0.5 Seconds
Error
Code
(16#)
Description Solution Flag Log
000C
The program in the PLC is
damaged.
Download the program again. SM9 V
0010 CPU memory is denied. Contact the factory. SM9 V
002E
CPU external memory access is
Contact the factory. SM9 V
002F
PLC programs are not consistent
with the system logs.
Download the program again.
SM34
V
0102
The interrupt number exceeds the
range.
Check the program, compile the program again, and
download the program again.
SM5 X
0202
The MC instruction exceeds the
range.
Check the program, compile the program again, and
download the program again.
SM5 X
0302
The MCR instruction exceeds the
Check the program, compile the program again, and
download the program again.
SM5 X
0D03
The operands used in DHSCS are
Check the program, compile the program again, and
download the program again.
SM5 X
0E05
The operands HCXXX used in
DCNT are not used properly.
Check the program, compile the program again, and
download the program again.
SM5 X
200A Invalid instruction
Check the program, compile the program again, and
download the program again.
SM5 V
6010
The number of MODBUS TCP
connections exceeds the range.
Check the number of superior devices (maximum is 32).
SM
1092
V
6011
The number of EtherNet/IP
connections exceeds the range.
Check the number of connections (maximum is 16).
SM
V
C000
-
The program syntax is incorrect.
Save the PLC program and hand the file to the company
or the technicians.
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