Troubleshooting For Other Cases - Mitsubishi Electric QJ71DN91 User Manual

9 TROUBLESHOOTING

9.1.5 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.
9 - 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
9 - 6