Mitsubishi Q01CPU

12 - 40
12.2 Troubleshooting
12.2.27 When Ethernet communication with the target device is not available
12
TROUBLESHOOTING
(From previous page)
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
TCP/IP?
(To next page)
Completed
Use TCP or UDP in
MELSOFT connection for
the specified number of
modules or less.
Is TCP or UDP in MELSOFT
connection used for more than
the number of modules set
by the parameter?
Has any device been
turned off during TCP/IP connection?
In the detailed
host station setting of
"Transfer Setup", increase the time out
value or the number of retries.
Is communication now
available?
Wait for a little while (approx. 1 min.),
and retry it after the connection is closed
by the alive check function of
QnUDE(H)CPU.
Increase the number of connections in the
setting to allow some spare connections.
Perform the following.
Perform the following.
Set a time out value or number
of retries again.
Consult your network administrator
and check the network status.
Is Ethernet
communication available with
the target device?
Is Ethernet
communication available with
the target device?
Is Ethernet
communication available with
the target device?