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MELSEC-F
TROUBLESHOOTING11
11 - 43
POINT
• If the external device communicates normally, the following conditions occur.
For TCP communication
When the external device's open status is complete, LEDs C1-C8, which are
in correspondence with connections 1-8, turn on.
For UDP communication
When external device communication is possible, LEDs C1-C8, which are in
correspondence with connections 1-8, turn on.
• For connections that communicate using MC protocol, [MC protocol usable]
(BFM #32 b9, b10: 10) at the communication parameters, or [Procedure (MC)]
at [Open Settings] in the FX Configurator-EN must be selected.
Is the IP address of the
command correct?
NO
1)
Correct the IP address and send the
command again.
YES
Are the
command formats,
such as command type, device
designation, and address
designation, designated
correctly?
NO
YES
NO
YES
Check and fix the faulty part.
Correct the command format.
Are there any open
errors or initial errors in the error
log area?
The Ethernet module hardware may
be faulty. Consult your nearest dealer
with the details of the errors.