6 Troubleshooting
6-6
CP1E CPU Unit Hardware User’s Manual(W479)
*1 The indicator status is the same for CPU errors and fatal errors, but they can be distinguished because a Programming
Device can be connected when a fatal error occurs, but not when a CPU error occurs.
*2 Refer to 6-1-8 Fatal Errors and 6-1-10 Non-fatal Errors for details on fatal and non-fatal errors.
Note The indicator status shows the status of the errors that have occurred in RUN or MONITOR mode.
Confirm the error category by referring to the status of the CPU Unit indicators, investigate the cause for
the error in the error tables, and take corrective actions.
: Not lit : Flashing : Lit
Error
POWER
RUN
ERR/
ALM
INH PRPHL BKUP
Built-in
RS-232C/
RS-485
communi-
cations
status
Error
code
(in A400)
Error
flag
Error
information
Opera-
tion
status
Error Word
Non-
fatal
errors
*2
FAL
instruction
executed
Lit Lit
Flash-
ing
−−− −0x4101
to
0x42FF
A402.15 Executed
FAL
Number
A360
to
A391
Opera-
tion con-
tinues.
Backup
memory
error
0x00F1 A315.15 −−
PLC setup
error
0x009B A402.10 −−
Option
Board error
(N/NA-
type only)
0x00D2 A315.13 Error
Option
Board
Number
A424
Battery error 0x00F7 A402.04 −−
Built-in ana-
log error
(NA-type
only)
0x008A A315.14 Built-in
analog
I/O error
details
A434
6-1-6 Error Processing Flowchart
Lit
Not lit
Not lit
Flashing
Lit
Not lit
Lit
ERR/ALM indicator lit?
Not lit
Problem?
POWER indicator lit?
RUN indicator lit?
ERR/ALM indicator lit?
A non-fatal error has occurred.
Refer to 6-1-10.
There is no error
in the CP1E.
Check for other
causes.
Refer to 6-2.
A fatal error has occurred.
Refer to 6-1-8.
Check the power supply.
Refer to 6-1-7 and 6-2.
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