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Mitsubishi Electric MELSEC-Q Series - Page 505

Mitsubishi Electric MELSEC-Q Series
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503
CHAPTER 10 TROUBLESHOOTING
10
10.1 Troubleshooting Flow
10.1.6 Cyclic transmission is disabled
Checking
own station
(sending side)
Checking
other station
(receiving side)
STOP/
RESET
ON
RUN
Yes
Yes
Yes
No
No
No
Check the sequence program
(for overwriting of data).
Is B/W value changed?
Is LB/LW value changed?
Monitor the B/W by device batch monitor of
Programming tool.
Check the sequence program.
(See if data write destination is correct.)
Is LB/LW value changed?
Is the CPU module
of own or another station
set to RUN?
Set the CPU modules of own station and other
station to STOP.
End
Change B/W value by device test of Programming
tool. Monitor the LB/LW (J \ ) by device batch
monitor of Programming tool.
Check the refresh parameter. (See if assignment
is not wrong or CPU-side device is not duplicated.)
Check the refresh parameter. (See if assignment
is not wrong or CPU-side device is not duplicated.)
For relay station, check to see if link refresh range
and transfer target link device range (interlink
transmission parameter) are not duplicated.
Check each station send range with
"Network range assignment" of control station.
Check each station send range with "Network
range assignment" of control station.
1)
Monitor the LB/LW (J \ ) by device batch monitor
of Programming tool.
Set the CPU module to RUN.
Page 183, Section 6.3
Page 204, Section 6.5
Page 232, Section 6.8
Page 183, Section 6.3
Page 204, Section 6.5

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