When Transient Transmission Cannot Be Performed - Mitsubishi Electric MELSEC iQ-R Series User Manual

When transient transmission cannot be performed

Intelligent device station (local station)
Problem Check item
Transient error F1-1
F1-2
F1-3
F1-4
4 TROUBLESHOOTING
116
4.5 Troubleshooting by Symptom
Description
Refresh data Is the transient transmission
area (dedicated instruction) correctly
performed?
Parameter Do the parameter settings match
setting with the status of the connected
modules?
Response status Error code B404H (response
timeout)
Is the transient transmission
(dedicated instruction) correctly
performed?
Do the master station and the
intelligent device station have no
error?
Target station Is the target station number
number correct?
Check method
Check if the correct destination is
accessed.
Check if a remote I/O station or
remote device station is not
connected.
Check if a response is received
from the request destination
station within the monitoring time.
Check the error code stored in
completion status when the
dedicated instruction was
executed.
• Check the error code of the
CPU module.
• Check the error code of the
master station.
• Check the operating status of
the master station and the
target intelligent device station.
Check if transient transmission is
not being executed for the same
station number at the same time.
Action
Access the correct buffer memory
area in the corresponding station.
Match the model set by the
parameter with that of the
connected module.
Increase the monitoring time
value.
If the error occurs again, check
the modules and cables at the
destination.
Take action according to the error
code.
Take action according to the error
code.
Correct the station number setting.
If executing for the same station
number, shift the execution timing.