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5. If computer link protocol transmission fails
a. Host computer side (main port)
START
Verify the slave Ethernet Port transmission
destination IP address.
No
Is the transmission destination IP
address set to that of the slave
Ethernet Port?
Yes
Check the network verification
items, i.e., the items unrelated to
the Ethernet Port.
Check the computer link protocol format.
No
Did the computer link protocol
return without errors?
Yes
END
Verify the slave Ethernet Port message
transmission UDP port number.
Supplement:
Remember that there are separate send and
receive ports that each have their own
message transmission UDP port number.
No
Is the transmission destination
message transmission UDP port
number correct?
Yes
1.Recheck the slave 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 slave Ethernet
Port?
Yes