Mitsubishi L26CPU-BT, User Manual, Page: 338 / 450

15 - 17 15 - 17
15 TROUBLESHOOTING
15.2.3 When transient data are faulty
(1) Problems on abnormal transient data of an intelligent device station
(local station)
Description of problem Check item Check contents Check procedure Corrective action
F1-1 Refresh data area
Is there any fault in the transient
transmission (dedicated
instruction)?
Check if a correct address is
accessed. Access the corresponding station
address.
F1-2 Parameter setting
Is there any fault in the
consistency of the parameter? Check if the remote I/O station or
remote device station is installed. Combine the parameter and the
installed model.
Error code B404
H
(response time
up)
Check if there is no response
from the request destination
station within the monitoring time.
Make the setting value of
monitoring time longer.
However, if an error occurs,
check the modules and cables at
the request destination.
Is there any fault in the transient
transmission (dedicated
instruction)? Check the error code of the
completion status when executing
a dedicated instruction. Take corrective actions according
to the error codes of the
completion status.
Transient error
F1-3 Response status
Does any error occur at the
master station or intelligent
device station?
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.
Take corrective actions according
to the error code.