288
Error and message
Possible correction
Probable cause
FAL no.
Duplex system error
DPL ERR
D0
Error has occurred in
Duplex System
operation.
Check Duplex System settings.
Battery error
BATT LOW
F7
Backup battery is
missing or its voltage
has dropped.
Check battery and replace if
necessary.
The following error messages appear for errors that occur after program exe-
cution has been started. PC operation and program execution will stop and
all outputs from the PC will be turned OFF when any of the following errors
occur. All CPU indicators will not be lit for the power interruption error. For all
other fatal operating errors, the POWER, and ERR indicators will be lit. The
RUN output will be OFF.
Error and message
FAL no.
Probable cause
Possible correction
Power interruption
No message
None
Power has been
interrupted for at least
10 ms.
Check power supply voltage and
power lines. Try to power-up
again.
Power interruption/fault
No message
None
Power has been
interrupted at an
Expansion Rack. A fault
has occurred in a Power
Supply Unit.
Check power supply voltage and
power lines. Replace the Power
Supply Unit.
CPU error
No message
None
Watchdog timer has
exceeded maximum
setting (default setting:
130 ms).
Restart system in PROGRAM
mode and check program. Reduce
cycle time or reset watchdog timer
if longer time required. (Consider
effects of longer cycle time before
resetting.)
Memory error
MEMORY ERR
F1
Memory Unit is
incorrectly mounted or
missing, or parity error
has occurred.
Check Memory Unit to make sure
it is mounted and backed up
properly. Perform a Program
Check Operation to locate cause
of error. If error not correctable, try
inputting program again.
No END(01) instruction
NO END INST
F0
END(01) is not written
anywhere in program.
Write END(01) at the final address
of the program.
I/O bus error
Rack no.
I/O BUS ERR
C0 to C7
Error has occurred in the
bus line between the
CPU and I/O Units.
The rightmost digit of the FAL
number will indicate the number of
the Rack where the error was
detected. Check cable
connections between the I/O Units
and Racks.
Too many Units
I/O UNIT OVER
E1
Maximum number of I/O
points exceeded when
I/O Table Registration
operation was
performed.
Check the number of points with
I/O Table Read. If necessary,
reduce number of Units in the
system to keep within maximum
number of I/O points and register
the I/O table again.
Fatal Operating Errors
Error Messages
Section 8-4
Содержание SYSMAC C1000H
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