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6 F 3 B 0 3 6 2
b. Send request
START
Verify the status using the procedure described in
the item 3 " If a SEND or RECV instruction fails
complete" on page 148.
No
Yes
Does the SEND instruction
complete?
Set the Ethernet Port to run + socket
transmission enabled using an operating mode
control request.
No
Is the station status such that run +
socket transmission is enabled?
Yes
Verify the remote Ethernet Port transmission
destination IP address.
No
Is the transmission destination IP
address set to that of the remote
Ethernet Port?
Yes
1.Recheck the remote port IP address and
message transmission UDP port numbers.
2.Verify that there is no router on the network.
3.Check the network verification items.
No
Does a response come back if a
ping is issued to the remote
Ethernet Port?
Yes
Open UDP ports on the local port and remote
ports.
No
Are the UDP ports on the local and
remote ports opened?
Yes
Resolve the problem by referring to the status.
No
Does the status indicate normal
completion?
Yes
Is the error counter read out from
the RAS information constant (i.e.,
not being incremented)?
(Use RAS information readout to
determine this.) RAS error counters: Alignment error:
Short packet
CRC error
It is possible that there is an abnormality on the
network itself. Check the network verification
items.
No
Yes
END