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Publication ENET-UM001I-EN-P - January 2010 153
Troubleshoot an EtherNet/IP Module Chapter 11
I/O Connections
If you want to check the status of your module’s I/O connections, click the
I/O Connections tab.
The I/O Connections diagnostic web page appears.
The Lost column shows the number of I/O pa
ckets that were not received.
Ethernet Statistics
Your EtherNet/IP communication module may experience intermittent
network connectivity due to:
a duplex mismatch.
electrical noise induced into a cable or resulting from a Logix/sw
i
tch
ground potential difference.
bad hardware, such as a cable or switch part.
Before troubleshooting this problem, familiarize y
o
urself with these Ethernet
statistics, or media counters.
To troubleshoot lost I/O packets, review the I/O Packet Counter
Statistics table in the Diagnostic Overview tab. See
page 151
.
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