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Chapter 2. Functions
2-37
2.8.4
Error code list
Error type
Message
Code
(F006)
CPU
Description
Corrective action
Internal
system error
System error
h0001
Stop
The operating system ROM or other
H/W is defective.
Contac t the nearest
LG representative
OS ROM
error
OS ROM
error
h0002
Stop
The internal system ROM is defective.
Contact the nearest
LG representative
OS RAM
error
OS RAM
error
h0003
Stop
The internal system RAM is defective.
Contact the nearest
LG representative
Data RAM
Error
Data RAM
error
h0004
Stop
The RAM at which a data is stored is
defective.
Contact the nearest
LG representative
Program
RAM error
Error
h0005
Stop
The RAM at which a program is
stored is defective.
Contact the nearest
LG representative
Gate array
error
G/A error
h0006
Stop
The gate array of CPU is defective.
Contact the nearest
LG representative
Sub rack
power down
error
Sub power
error
h0007
Stop
The expansion rack is power off or
defective.
Check the expansion
rack is powered.
OS WDT
time out error
OS WDT
error
h0008
Stop
The CPU operation time (not the scan
time) is too long.
Power off and restart
the CPU. If error still
occurs, contact the
nearest LG
representative
Shared RAM
error
Common
RAM error
h0009
Stop
Shared RAM interface error
Contact the nearest
LG representative
Fuse break
error
I/O fuse error
h000A
Run
(Stop)
The fuse used in output module is
blown.
Check the fuse and
replace it.
Instruction
code error
OP code
error
h000B
Stop
CPU meets an instruction can not be
decoded during executing program.
Contact the nearest
LG representative
Flash
Memory error
User memory
error
H000C
Stop
CPU can not access the internal flash
memory
Check the flash
memory and replace it
if necessary.
I/O slot error
I/O slot error
h0010
Stop
←
Mount or dismount a module while
the PLC is powered. A module is
mounted improperly.
↑
I/O module or expansion cable is
defective.
←
Power off -
Remount module –
Power on
↑
Replace the I/O
module or expansion
cable
Maximum I/O
over
Max I/O over
h0011
Stop
I/O points exceed the maximum limit
points (Fmm mounting numbers over
error,
···)
Replace I/O unit
Special Card
I/F error
Special I/F
error
h0012
Stop
Error occurred during special card
interface
Contact the nearest
LG representative
Fmm 0 I/F
error
Fmm 0 I/F
error
h0013
Stop
Fmm 0 I/F error
Contact the nearest
LG representative
Fmm 1 I/F
error
Fmm 1 I/F
error
h0014
Stop
Fmm 1 I/F error
Contact the nearest
LG representative
Fmm 2 I/F
error
Fmm 2 I/F
error
h0015
Stop
Fmm 2 I/F error
Contac t the nearest
LG representative
Fmm 3 I/F
error
Fmm 3 I/F
error
h0016
Stop
Fmm 3 I/F error
Contact the nearest
LG representative
Parameter
error
Parameter
error
h0020
Stop
When the parameter is wrong or has
incorrect checksum.
Change parameter
setting