FX Series Programmable Controller Diagnostic Devices 6
6-27
Error Detection
Device
Stored Error
Number
Associated Meaning Action
D8067
Operation
error
0000 No error
These error occur during
the execution of an
operation.
When an operation error
occurs, STOP the PLC
enter programming ode
and correct the fault.
Note: operation errors
can occur even when the
syntax or circuit design
is correct, e.g.
D500Z is a valid
statement within an
FX
1N PLC. But if Z had a
value of 10000, the data
register D10500 would
be attempted to be
accessed. This will
causeanoperationerror
as there is no D10500
device available.
6701
1)No jump destination (pointer) for CJ or
CALL instructions
2)(P)ointer is designated in a block that
comes after the END instruction
3)An independent label is designated in a
FOR-NEXT loop or a subroutine
6702
6 or more CALL instruction nesting levels
have been used
6703
3 or more interrupt nesting levels have
been used
6704
6 or more FOR - NEXT instruction nesting
levels have been used
6705
An incompatible device has been
specified as an operand for an applied
instruction
6706
A device has been specified outside of
the allowable range for an applied
instruction operand
6707
A file register has been accessed which is
outside of the users specified range
6708 FROM/ TO instruction error
6709
Othererror,i.e.missingIRE/SRET,
unauthorized FOR - NEXT relationship
D8067
PID
Operation
error
6730 Sampling time T
S (TS<0 or >32767)
The identified parameter
is specified outside of its
allowable range
Execution ceases PID
instruction must be reset
before execution will
resume
6732 Input filter value α (α<0 or >=101)
6733 Proportional gain K
P (KP<0 or >32767)
6734 Integral time constant T
I (TI<0 or >32767)
6735 Derivative gain K
D (KD<0 or >=101)
6736
Derivative time constant T
D
(TD<0 or >32767)
6740
Sampling time TS is less than the
program scan time.
TS is set to program
scan time -
Execution will continue.
6742 Current value ∆ exceeds its limits Data affected resets to
the nearest limit value.
For all errors except
6745, this will either be a
minimum of -32768 or a
maximum of +32767.
Execution will continue,
but user should reset
PID instruction.
6743 Calculated error ε exceeds its limits
6744 Integral result exceeds its limits
6745
Derivative gain over, or differential value
exceeds allowable range
6746 Derivative result exceeds its limits
6747 Total PID result exceeds its limits
6750
SV - PV
nf
< 150, or system is unstable
(SV - PV
nf
has wide, fast variations)
The error fluctuation is
outside the normal
operation limits for the
PID instruction.
Execution ceases. PID
instruction must be
reset.
6751 Large Overshoot of the Set Value
6752
Large fluctuations during Autotuning Set
Process
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