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10 TROUBLESHOOTING
10.1.5 Troubleshooting for other cases
Symptom
Auto configuration is not
executed.
Unable to obtain expected
parameters by auto
configuration.
Parameter saving/clearing
is not started.
Parameters are not
saved.
10 - 6
Check
Are the following output signals on?
• I/O Communication Request (Y11)
• Request for Saving Parameters to Flash
ROM (Y17)
• Is "Start" set in Auto Communication Start
Setting (address: 0631
(I/O Communicating is on?)
• Are the slave nodes powered on?
• Is the network powered on?
• Is the wiring correct?
• If the target slave node is the QJ71DN91,
check if "Start" is set in Auto Communication
Start Setting (address: 0631
Communication Request (Y11) is on.
• Are the slave nodes set in order of node No?
• Are the connection types and I/O points
correct?
Are the following output signals on?
• I/O Communication Request (Y11)
• Auto Configuration Request (Y15)
• Is "Start" set in Auto Communication Start
Setting (address: 0631
H
(I/O Communicating is on?)
• If the parameter saving area correct?
Set the output signals to off, and then set Auto
Configuration Request (Y15) to off and on
again.
• Set "Not start" in Auto Communication Start
)?
• Setting I/O Communication Request (Y11) to
H
Check that the slave nodes and network are
powered up and the wiring is correct.
When the auto communication start setting is
not set up for the target slave node
) or if I/O
(QJ71DN91), set I/O Communication Request
H
(Y11) to off and then on.
The slave node settings detected by auto
configuration are stored in order of node No.
Correct values in Parameters for Master
Function (address: 01D4
Referring to the manual for each slave node,
check available connection types and I/O
points. Correct values in Parameters for Master
Function (address: 01D4
Set the output signals to off, and then set
Request for Saving Parameters to Flash ROM
(Y17) to off and on again.
• Set "Not start" in Auto Communication Start
)?
• Setting I/O Communication Request (Y11) to
Check Parameter Area Select Bit (address:
0630H), and set Request for Saving
Parameters to Flash ROM (Y17) to off and
then on again.
Action
Setting (address: 0631
), and save the
H
parameters to a flash ROM.
on and then off will stop I/O communication,
and thereby I/O Communicating (X01) is set
to off.
to 03CF
H
to 03CF
H
Setting (address: 0631
), and save the
H
parameters to a flash ROM.
on and then off will stop I/O communication,
and thereby I/O Communicating (X01) is set
to off.
MELSEC-Q
).
H
).
H
10 - 6
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Troubleshooting
