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Error Processing Section 9-2
Non-fatal Errors If the following LED indicator condition appears during operation (in RUN or
MONITOR mode), it indicates that a non-fatal error has occurred..
The non-fatal error’s error contents will be displayed in the Error Tab in the
CX-Programmer’s Error Window. Determine the cause of the error from the
error message and related Auxiliary Area flags/words and correct the cause of
the error.
Errors are listed in order of importance. When two or more errors occur at the
same time, the more serious error’s error code will be recorded in A400.
Non-fatal Errors
I/O Table
Setting
error
80E0 A401.10: I/O
Setting Error
Flag
More than 5 Modules are connected. Check whether the number of Modules is
incorrect. If the number of Modules is
incorrect, turn OFF the power supply and
correctly connect the Modules.
Cycle
Time
Overrun
error
809F A401.08: Cycle
Time Too Long
Flag
The cycle time has exceeded the
maximum cycle time (watch cycle
time) set in the System Setup.
Change the program to reduce the cycle
time or change the System Setup’s maxi-
mum cycle time setting.
One way to reduce the cycle time is by
jumping parts of the program that aren’t
being used.
System
FALS error
C101 to
C2FF
A401.06: FALS
Error Flag
FALS has been executed in the pro-
gram.
The error code in A400 will indicate
the FAL number. The leftmost digit of
the code will be C and the rightmost
3 digits of the code will be from 101
to 2FF hex, which correspond to FAL
numbers 001 to 511.
Remove the cause of the user-defined
error indicated by the FAL number.
Error Error
code (in
A400)
Auxiliary Area
flag and word
data
Probable cause Possible remedy
Power Supply
Unit Indicators
Module Indicators
POWER RDY RUN ERR PRPHL COMM1 COMM2
Lit Lit Lit Flashing --- --- ---
Error Error
code (in
A400)
Flag and word
data
Probable cause Possible remedy
System FAL
error
4101 to
42FF
A402.15: FAL
Error Flag
FAL has been executed in program.
The error code in A400 will indicate
the FAL number. The leftmost digit of
the code will be 4 and the rightmost
3 digits of the code will be from 101
to 2FF hex, which correspond to FAL
numbers 001 to 511.
Remove the cause of the user-
defined error indicated by the FAL
number.
System Setup
error
009B A402.10: Sys-
tem Setup Error
Flag
A409: System
Setup Error
Location
There is a setting error in the Sys-
tem Setup. The location of the error
is written to A409.
Set the correct value in the System
Setup.
Motion Control
Module Moni-
toring error
0300 A402.05: Motion
Control Module
Monitoring Error
Flag
An error occurred during cyclic
refreshing with the Motion Control
Module.
Turn the power OFF and ON again.