Mitsubishi Melsec-Q Series User Manual page 350

(From the previous page)
Is the same
protocol (TCP/IP) used for
communication with the target
device?
YES
Is the IP address
specified in the command correct?
YES
Are the data sent
to the port number specified in the Open
settings on the Built-in Ethernet
port QCPU?
YES
Is the Communication
data code setting (binary/ASCII)
matched with the sent
command?
YES
Is the sub-header
value correct?
YES
Were data of the request
data length sent?
YES
(To the next page)
12 - 55
NO
Use the same protocol (TCP/IP) for communication with
the target device.
NO
NO
Correct the IP address and send the command again.
NO
NO
Send the data to the specified port No.
NO
NO
Send a command matched with Communication data
code setting.
NO
NO
Send a sub-header of a normal value.
NO
NO
Send data of the request data length.
NO
Was the error resolved?
Was the error resolved?
Was the error resolved?
Was the error resolved?
Was the error resolved?
Was the error resolved?
YES
YES
YES
YES
YES
YES
Completed