Mitsubishi Electric MELSEC iQ-R Series User Manual page 559

Error Error name Error details and cause
code
1830H Receive queue • The number of transient receive
full request exceeded the upper limit of
simultaneously processable requests.
1831H Receive • Transient reception failed.
processing error
1832H Transient data • Too much transient transmission
error processing exists and transient
transmission cannot be performed.
1845H Transient data • Too much transient transmission
buffer full processing exists and transient
transmission cannot be performed.
1860H Network error • Tracking communications stopped
due to an error in the network or in the
redundant function module.
1861H Tracking • Tracking communications could not
communication be performed successfully due to an
error error in the network or in the
redundant function module.
1900H Constant scan • The scan time exceeded the constant
time error scan time set in the CPU parameters.
1B00H Network • The CC-Link IE Field Network
configuration configuration differs between the
mismatch systems A and B. (The error is
detected in the standby system.)
1B20H System • The operating status of the CPU
consistency module differs between the systems A
check error and B. (The error is detected in the
(operating standby system.)
status)
1B40H Redundant • Both systems were found to be set as
system error system A or system B when tracking
cables were connected. (The error is
detected in the control system or the
standby system.)
1B42H Redundant • The CPU module operated in
system error redundant mode was connected to
the CPU module set to process mode
with tracking cables. (The error is
detected in the control system or the
standby system.)
Stop/ Action
continue
Continue • Reduce the frequency of transient
transmission, and perform
transmissions again.
• Increase the frequency of
transient transmission by using
the COM instruction.
Continue • Reduce the frequency of transient
transmission, and perform
transmissions again.
Continue • Correct the number of transient
transmission executions.
Continue • Correct the number of transient
transmission executions.
Continue • Check the network status by
executing module diagnostics
using the engineering tool and
take an action.
• If the error code is displayed again
even after taking an action, please
consult your local Mitsubishi
representative.
Continue • Check and correct the constant
scan time setting.
Continue • Check that all network cables are
connected correctly.
• Take measures to reduce noise.
• Reset the CPU module and run it
again. If the same error code is
displayed again, the possible
cause is a hardware failure of the
network cable. Please consult
your local Mitsubishi
representative.
Continue • Set the same operating status to
the CPU modules in both systems.
Continue • Set one system as system A and
the other system as system B by
performing online operation. Then,
restart the CPU modules in both
systems.
Continue • Read the project stored in the
CPU module operated in
redundant mode, and write it to
the CPU module set to process
mode. Then, reset the CPU
module set to process mode, and
run it again.
Detailed Diagnostic
information timing
 Always
System Always
configuration
information
 Always

Always
 Always
Time At END
information instruction
execution
System Always
configuration
information
 Always

Always
 Always
36 ERROR CODES
557
36.4 List of Error Codes
36