Mitsubishi Electric MELSEC iQ-R Series User Manual page 558

Error Error name
code
1240H Inter-module
synchronization
processing error
1241H Inter-module
synchronization
processing error
1260H Multiple CPU
synchronization
processing error
1262H
1800H Annunciator ON
1810H Operation
continuation
error
1811H Control CPU
error
1812H Module error
36 ERROR CODES
556
36.4 List of Error Codes
Error details and cause
• The execution interval of a
synchronous interrupt program has
exceeded the set value.
• The inter-module synchronous
interrupt program (I44) did not
complete within the inter-module
synchronization cycle.
• The execution interval of a
synchronous interrupt program has
exceeded the set value.
• A cycle where the inter-module
synchronous interrupt program (I44)
was not executed was detected.
• The execution interval of a
synchronous interrupt program has
exceeded the set value.
• The multiple CPU synchronous
interrupt program (I45) did not
complete within the multiple CPU
fixed scan communication cycle.
• The program execution section of a
synchronous interrupt program has
been exceeded.
• The multiple CPU synchronous
interrupt program (I45) did not
complete within the program
execution section.
• The annunciator (F) on status has
been detected.
• The PALERT(P) instruction was
executed.
• An error has been detected in the
CPU module.
• Tracking communications could not
be performed successfully due to an
error in the redundant function
module.
Stop/ Action
continue
Continue • Check the detailed information
(time information) of the error by
executing module diagnostics
using the engineering tool, check
the time setting, and take the
following actions:
(1) Check and correct the
processing of the interrupt
program (I44) so that it can be
completed within the period
specified in the fixed scan
interval setting.
(2) Check and correct the fixed scan
interval setting value.
Continue • Check and correct the interrupt
disable sections and the interrupt
programs with a high priority so
that the inter-module synchronous
interrupt program can be
executed.
Continue • Check the detailed information
(time information) of the error by
executing module diagnostics
using the engineering tool, check
the time setting, and take the
following actions:
(1) Check and correct the processing
of the interrupt program (I45) so
that it can be completed within
the period specified in the fixed
scan interval setting.
(2) Check and correct the fixed scan
interval setting value.
Continue • Check the detailed error
information (annunciator
information) by executing module
diagnostics using the engineering
tool, and correct the program
corresponding to the displayed
annunciator number.
Continue • Check the detailed information
(error location information) of the
error by executing module
diagnostics using the engineering
tool and check the corresponding
program - one that outputs the
program error code.
Continue • Check the error details by
executing module diagnostics
using the engineering tool and
take an action.
Continue • The possible cause is malfunction
due to noise. Take measures to
reduce noise by checking the
distance of wires and cables, and
the grounding status of each
device.
• Execute a module communication
test. If the same error code is
displayed again, the possible
cause is a hardware failure of the
redundant function module.
Please consult your local
Mitsubishi representative.
Detailed Diagnostic
information timing
Time At interrupt
information occurrence

At interrupt
occurrence
Time At interrupt
information occurrence
Error location At instruction
information execution
and
annunciator
information
Error location At instruction
information execution
and program
error
information
 Always

Always