Download CJ1W-ETN21 (100Base-TX)

Section 8-4
Troubleshooting Procedures
Reception Problems
Reception Problems occurred.
Is reception
processing
finishing?
Y
N
Is the remote
node not processing to
send data?
N
Adjust the remote node to process send data.
Y
Read controller status
using the FINS command
READ CONTROLLER
STATUS.
Have any reception
errors occurred?
Y
There may be noise affecting the network.
Increase the number of retries or take
measures against noise as described in 2-4
Network Installation.
N
Read memory status
using the FINS command
READ MEMORY STATUS.
Is the network
Y
memory being used more
than 80%?
There may be too much load on the Ethernet
Unit. If the memory exhaustion records show
counts, UDP data may be corrupted. Check
your applications.
N
Read protocol status using
the FINS command READ
PROTOCOL STATUS.
Are any of
the first three items in the
status being counted?
Y
The UDP protocol of the remote node may not
be compatible with that of the Ethernet Unit.
Use another communications service.
N
Return to the procedure
for general problems.
216
Check the remote node for transmission problems using the
next procedure. If nothing is uncovered, go to Network
Connection Problems.