When Transient Data Are Faulty - Mitsubishi Electric L26CPU-BT User Manual

15.2.3

When transient data are faulty

(1) Problems on abnormal transient data of an intelligent device station (local
station)
Description
Check item
of problem
Refresh data
F1-1
area
Parameter
F1-2
setting
Transient error
F1-3 Response status
Target station
F1-4
number
356
Check contents
Is there any fault in the
transient transmission
(dedicated instruction)?
Is there any fault in the
consistency of the
parameter?
Error code B404
H
(response time up)
Is there any fault in the
transient transmission
(dedicated instruction)?
Does any error occur at the
master station or intelligent
device station?
Is the target station number
correct?
Check procedure
Check if a correct address is
accessed.
Check if the remote I/O station
or remote device station is
installed.
Check if there is no response
from the request destination
station within the monitoring
time.
Check the error code of the
completion status when
executing a dedicated
instruction.
Check the error code of the
programmable controller CPU.
Check the error code of the
master station.
Check the operation status of
the master station or target
intelligent device station.
Check if transient transmission
is not being executed for the
same station number at the
same time.
Corrective action
Access the corresponding
station address.
Combine the parameter
and the installed model.
Make the setting value of
monitoring time longer.
However, if an error occurs,
check the modules and
cables at the request
destination.
Take corrective actions
according to the error
codes of the completion
status.
Take corrective actions
according to the error code.
Correct the station number
setting. If executing for the
same station number, shift
the execution timing.