Rockwell Automation Ethernet Design Considerations Reference Manual User Manual
Page 53
Rockwell Automation Publication ENET-RM002C-EN-P - May 2013
53
Ethernet Infrastructure Features
Chapter 3
A DLR network is a single-fault tolerant network. Network traffic is managed to
make sure critical data is delivered in a timely manner.
Physical layer failure includes the following:
•
All faults that are detectable at physical layer
•
Physical layer failure detected by protocol-aware node
•
Status message sent by ring node and received by ring supervisor
Stratix 8000
IE Switch
Beacon
Beacon
Forwarding
ControlLogix Controller
Active Ring
Supervisor
Announce
Announce
Blocking
ETAP
POINT I/O
Distributed I/O
ArmorPOINT I/O
Distributed I/O
POINT I/O
Distributed I/O
ArmorPOINT I/O
Distributed I/O
Stratix 8000
IE Switch
ETAP
ControlLogix Controller
Active Ring
Supervisor
Link Failure
Link Status
Link Status
POINT I/O
Disrtributed I/O
ArmorPOINT I/O
Distributed I/O
POINT I/O
Disrtributed I/O
ArmorPOINT I/O
Distributed I/O
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