Allen-Bradley 1756-CNB - How an EthernetIp Module Handles a Cable Break

Publication 1756-UM523F-EN-P - December 2006
40 Design the System
How an EtherNet/IP Module Handles a Cable Break
An EtherNet/IP module looks for a carrier signal only from the closest
switch. It does not know the health of the network beyond that point.
Data does not have to be flowing.
If the EtherNet/IP module:
• gets the carrier signal, it considers the network as OK.
• does not get the carrier signal, it shows Link lost.
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Several switches
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