Omron SYSMAC CS1W-ETN21 Operation Manual page 241

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