Mitsubishi FX3UC SERIES User Manual page 407

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition
Error PLC operation at
code error occurrence
Operation error [M8067(D8067)]
6708
6709
6710
6730
6732
6733
6734
Continues
6735
operation
6736
6740
6742
6743
6744
6745
6746
6747
6748
6749
Contents of error
FROM/TO instruction error
Other (e.g. improper branching)
Mismatch among parameters
Incorrect sampling time (T ) (T
S
Incompatible input filter constant (α)
(α < 0 or 100 ≤ α)
Incompatible proportional gain (K
Incompatible integral time (T ) (T
I
Incompatible derivative gain (K
< 0 or 201 ≤ K
(K )
D D
Incompatible derivative time (T
) ≤ Scan time
Sampling time (T
S
Variation of measured value exceeds limit.
( PV < −32768 or +32767 <
Deviation exceeds limit.
(EV < −32768 or +32767 < EV)
Integral result exceeds limit.
(Outside range from −32768 to +32767)
Derivative value exceeds limit due to derivative
gain (K ).
D
Derivative result exceeds limit.
(Outside range from −32768 to +32767)
PID operation result exceeds limit.
(Outside range from −32768 to +32767)
PID output upper limit set value < PID output lower
limit set value.
Abnormal PID input variation alarm set value or
output variation alarm set value (Set value < 0)
12 Test Operation, Adjustment, Maintenance and Troubleshooting
12.6 Judgment by Error Codes and Representation of Error Codes
Error codes in shaded columns are added in FX
This error occurs in the execution of the operation.
• Review the program, or check the contents of
the operands used in the applied instructions.
• Check whether the specified buffer memories
exist in the equipment.
• Check whether the extension cables are
correctly connected.
This error occurs in the execution of operation.
Review the program, or check the contents of the
operands used in the applied instructions.
Even if the syntax or circuit design is correct, an
operation error may still occur.
For example:
"T200Z" itself is not an error. But if Z had a value of
400, the timer T600 would attempt to be accessed.
This would cause an operation error since there is
no T600 device available.
This error occurs when the same device is used
within the source and destination in a shift
instruction, etc.
≤ 0)
S
<PID instruction is stopped.>
) (K < 0)
P P This error occurs in the parameter setting value or
operation data executing PID instruction.
< 0)
I
Check the contents of the parameters.
)
D
) (T < 0)
D D
<Auto tuning is continued.>
The operation is continued in the condition
"sampling time (T
PV)
<PID operation is continued.>
The operation is continued with each parameter set
to the maximum or minimum value.
<Transpose of output upper limit value and output
lower limit value. → PID operation is continued.>
Check whether the target setting contents are
correct.
<Alarm output is not given. → PID operation is
continued.>
Check whether the target setting contents are
correct.
PLCs.
3UC
Action
) = cyclic time (scan time)".
S
401
11
12
A
B
C
D
E
F