List Of Alarm Code - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Error code Error name
1AAH Range setting range error with
disconnection detection enabled
1ACH Convergence detection time
setting range error
1ADH Convergence detection upper
limit value/lower limit value setting
inversion error
1AFH Offset/Gain setting write error
1D7H Offset/Gain computed value
range error
3080H Analog ADP Hardware error
3081H Analog ADP Power failure
3082H Analog ADP Memory Error
3083H Analog ADP Memory Error
3084H Analog ADP Communication error
2.9

List of Alarm Code

The following table shows the list of the alarm codes stored.
: This symbol indicates the number of the channel where an alarm has occurred. (1: CH1 to 4: CH4)
Alarm code Alarm name

0000H
080H Process alarm (upper limit)
081H Process alarm (lower limit)
082H Rate alarm (upper limit)
083H Rate alarm (lower limit)
090H Over scale (upper limit)
091H Over scale (lower limit)
0A0H Disconnection detection
0B0H Deviation detection
Description and cause
CH Disconnection detection functions were
set to Enable and CH Input range is set to
those other than the following.
• 1 to 5 V
• 4 to 20 mA
A value other than 1 to 10000 was set to CH
Convergence detection time setting.
Lower limit valuethe upper limit value was set
to CH Convergence detection upper limit
value and CH Convergence detection lower
limit value.
During CH Offset/Gain setting write or CH
Offset/Gain setting initialization, 'CH A/D
conversion enable/disable setting' was set to
conversion enable.
CH Offset/Gain computed value became out
of range.
Hardware error of analog ADP was detected.
The power is not supplied normally.
Read error or damaged EEPROM.
There is some offset/gain data defect or setting
defect in EEPROM.
Communication error occurred between the
analog ADP and the PLC.
Description and cause
There is no error.
The process alarm (upper limit) has occurred in
CH.
The process alarm (lower limit) has occurred in
CH.
The rate alarm (upper limit) has occurred in
CH.
The rate alarm (lower limit) has occurred in
CH.
The over scale (upper limit) has occurred in
CH.
The over scale (lower limit) has occurred in
CH.
Disconnection is detected in the CH.
Deviation is detected in the CH.
Action
For the channel detecting simple disconnection
using the disconnection detection function,
reset CH Input range to any of the following.
• 1 to 5 V
• 4 to 20 mA
Reset CH Convergence detection time setting
to the value within 1 to 10000.
Reset CH Convergence detection upper limit
value and CH Convergence detection lower
limit value such that lower limit value<upper
limit value.
Set 'CH A/D conversion enable/disable
setting' to conversion disable and write CH
Offset /Gain setting or initialize CH Offset/
Gain setting.
Reset CH Offset value and CH Gain setting
value.
After resetting the CPU unit, carry out RUN. If
the same error is displayed again, there is a
possibility of hardware error of the analog ADP.
Consult the nearest Mitsubishi Electric
representative.
Confirm if the power is supplied properly.
After resetting the CPU unit, carry out RUN. If
the same error is displayed again, there is a
possibility of damaged EEPROM. Consult the
nearest Mitsubishi Electric representative.
Reset the data by offset/gain settings.
Confirm if ADP is connected properly to the
PLC. If not improved, consult the nearest
Mitsubishi Electric representative.
Action

When the CH digital operation value returns
from the warning output range, the alarm code
automatically changes to "0: Normal".
When the CH digital operation value change
rate returns to the setting range, the alarm code
automatically changes to "0: Normal".
When the alarm clear request is set to ON after
the analog input value returns to the setting
range, all over-scale detection flags become "0:
Normal", and the alarm code stored in the "A/D
conversion latest alarm code" is cleared.
When the alarm clear request is set to ON after
the CH is recovered from disconnection, all
CH disconnection detection flags become "0:
Normal", and the alarm code stored in the "A/D
conversion latest alarm code" is cleared.
When the deviation between the CH becomes
less than the deviation value for deviation
between CH detection, the deviation between
CH detection flag automatically becomes "0:
Normal".
2 FX5-4AD-ADP
2.9 List of Alarm Code
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