Mitsubishi Electric MELSEC-Q Series User Manual page 276

4
Do multiple
No
stations repeatedly
fail and recover?
Yes
Troubleshoot the problem with reference to
"Troubleshooting by the status logging".
Page 275, Section 11.1.2 (2)
End
274
Faulty station type
Remote I/O station
Are all RY outputs
disabled?
No
Remote device station
ready signal of the
remote device station
remain off?
No
Is the read/write
of word data disabled?
No
failed to be read/written by
the number of occupied
No
Are all RY outputs
disabled?
No
Intelligent device station
(local station)
Is the read/write
of word data disabled?
No
failed to be read/written by
the number of occupied
No
Are all RY outputs
disabled?
No
Is the read/write
of cyclic data disabled?
No
Does the error
code return to the response
No
Master station
Is the link stop/
restart disabled?
No
Is the detection of
faulty stations disabled,
or does it take time?
No
Remote I/O station
cyclic data failure
Yes
C1-1, C1-2
Remote device station
cyclic data failure
Does the
Yes
Yes
Are data
Yes
stations?
Yes
D1-1, D1-2
Intelligent device station
cyclic data failure
Yes
Are data
Yes
stations?
Yes
Yes
E1-1, E1-2
Intelligent device station
5
transient data failure
Yes
status?
F1-1, F1-2, F1-4
Master station operation error
Yes
G1-1, G1-2
Yes
G3-1, G4-1
C2-1
D5-1
D2-1
D3-1
The numbers listed to the left
correspond to those listed in the
D4-1
"Check item" column in
Section 11.2.2 "Problems due to
cyclic data error".
Take corrective action with
reference to the corresponding
item.
E2-1
E3-1
E4-1
The numbers listed to the left
correspond to those listed in the
"Check item" column in
Section 11.2.3 "Problems due to
F1-3
transient data error".
Take corrective action with
reference to the corresponding
item.
The numbers listed to the left
correspond to those listed in the
"Check item" column in
Section 11.2.4 "Problems due to
operation error in the master
station".
Take corrective action with
G2-1
reference to the corresponding
item.