Omron CV500 Installation Manual page 90

Error Messages and Alarm Outputs
Fatal Errors
Item Cause
Power interrup- Power interruption
tion occurred and
lasted longer than
the specified limit.
Expansion CPU Expansion CPU
Rack power Rack
OFF Power Supply Unit
is OFF.
CPU error Watchdog timer
Memory error Error occurred dur-
ing internal
memory and Ex-
pansion DM verifi-
cation.
I/O bus error Erroneous data
transferred be-
tween CPU and I/O
Units
Duplicated Rack numbers and
number CPU Bus Unit unit
numbers or I/O
words are assigned
in duplicate.
CPU bus error Error in data trans-
fer between CPU
and CPU Bus Unit
or watchdog timer
error in CPU Bus
Unit.
I/O points over Too many I/O
points or too many
Units are registered
in the I/O table.
I/O setting error Input/Output desig-
nation is wrong for
I/O Unit.
Program error END(001) is miss-
ing, or the capacity
of the user memory
is exceeded.
Cycle time over Cycle time monitor
time is exceeded.
Fatal SFC error SFC syntax error.
System failure FALS was ex-
(FALS) ecuted in program.
CPU indicators
Power RUN ERROR WDT ALARM OUT INT COMM
Unlit Unlit Unlit Unlit
Lit Unlit Unlit Unlit
Lit Unlit --- Lit
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Lit Unlit Lit ---
Unlit Unlit Unlit
Unlit Unlit Unlit
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
--- --- ---
Section 5-1
Peripheral
Device error
message
POWER FAIL
POWER FAIL
WDT ERR
MEMORY ERR
I/O BUS ERR
NO DUPL ERR
CPU BUS ERR
I/O OVER
I/O SET ERR
NO END
INSTR
PROGRAM
OVER
SCAN TIME
OVER
SFC ERR
SYSTEM FAL
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