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MELSEC-F
TROUBLESHOOTING11
11 - 38
Does the external device
operate normally?
YES
The Ethernet module hardware on
the sending side may be faulty.
Consult your nearest branch office or
dealer with the details of the errors.
NO
Check the device on the sending
side. (If the sending side is also an
Ethernet module, see Section 11.4.)
NO
1)
Data may not have been set from the
external device.
Check the sending side.
(If the sending side is also an
Ethernet module, see Section 11.4.)
Fix the faulty part of the device on
sending side.
Did the error
occur in the device on the
sending side?
NO
YES
YES
YES
NO
YES
Does the communication
protocol (TCP/UDP) match with that
of the external device?
Is the parameter
for IP address of the
external device correct?
Is each Port No.
of the local and the
external station
correct?
NO
YES
Correct the IP address of the external
device.
The Ethernet module on receiving
side may be faulty. Consult your
nearest branch office or dealer with
the details of the errors.
Check the communication status
of the device on the sending side.
Is "0002
H" written to
BFM#1610
, 1611?
Change the condition for writing
"0002
H" to BFM#1610, 1611.
Match the protocol with the
communication protocol (TCP/UDP)
of the external device.
(For details, see Section 5.5.)
Is the receive
completion signal
(corresponding bit of BFM#20485)
of the applicable fixed buffer on?
Is the value of BFM#1610
,
1611 set to
0001
H
?
NO