Appendix
FP
Σ
User's Manual
300
12.7.2 Self-Diagnostic Error Codes
Error
code
Name of error
Operation
status of
PLC
Description and steps to take
E26
User's ROM error
Stops
Probably a hardware problem. Please contact your dealer.
E27
Unit installation error
Stops
The number of installed units exceeds the limit. Turn off the
power supply and check the restrictions on unit combinations.
E28
System register error
Stops
Probably an error in the system registers. Check the system
register settings.
E30
Interrupt error 0
Stops
Probably a hardware problem. Please contact your dealer.
E31
Interrupt error 1
Stops
An interrupt occurred without an interrupt request. A hardware
problem or error due to noise is possible. Turn off the power
and check the noise conditions.
An interrupt occurred without an interrupt request. A hardware
problem or error due to noise is possible. Turn off the power
and check the noise conditions.
E32
Interrupt error 2
Stops
There is no interrupt program for an interrupt which occurred.
Check the number of the interrupt program and change it to
agree with the interrupt request.
E34
I/O status error
Stops
A faulty unit is installed. Replace the unit with a new one.
E40
Position of abnormal
I/O unit
Stops
An error in an I/O unit occurred. Check the error using the
system variable sys_wHardwareErrorLeftIoUnit and locate the
faulty FP
Σ
expansion I/O unit. Then check the unit.
E41
Intelligent unit error
Stops
An error in an intelligent unit occurred. Check the error using
the system variable sys_wHardwareErrorIntelligentUnit_0_15
and locate the faulty FP
Σ
intelligent unit.
E42
I/O unit verify error
Selectable
The connection condition of an I/O unit has changed
compared to that at the time of power-up. Check the error
using using sys_wVerifyErrorRightUnit (FP0 expansion I/O
unit) or sys_wVerifyErrorUnit_16_31 (FP
Σ
expansion I/O unit)
and locate the faulty I/O unit. Set the operation status using
system register 23 to continue operation.
E45
Operation error
Selectable
Operation became impossible when a high-level instruction
was executed. The causes of calculation errors vary
depending on the instruction. Set the operation status using
system register 23 to continue operation.
E50
Battery error
Selectable
The voltage of the backup battery decreased or the battery is
not connected to the control unit. Check the connection of the
backup battery and replace the battery if necessary. This self-
diagnostic error can be set with system register 4 (in this case,
the ERROR/ALARM LED flashes).
E100–
E199
Stops
E100–
E299
Self-
diagnostic
error set by
F148_ERR
E200–
E299
Continues
The self-diagnostic error specified by the F148_ERR
instruction occurred. Take steps to clear the error condition
according to the specification you chose.
Содержание FPS Series
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