Routable CIP Safety System

The following example illustrates the extent of a routable
CIP Safety
system. In this example, the system is not interconnected to another
CIP Safety
system through a larger, plant-wide Ethernet backbone.
Routable CIP Safety System
Routable CIP Safety System
Note the following:
  • For a backplane port, an SNN is assigned to the backplane and the node address is the slot number of the device.
  • For an Ethernet port, an SNN is assigned to the
    EtherNet/IP
    network and the node address is the IP address of the device.
  • For a controller in Dual-IP mode and connected to two separate
    EtherNet/IP
    networks, they must not share SNN values because the switches can incorrectly route packets between them.
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