108 Rockwell Automation Publication 1769-UM022C-EN-P - June 2018
Chapter 7 Add, Configure, Monitor, and Replace CIP Safety I/O Devices
3. Check the checkbox to indicate that this module and the controller
communicate through NAT devices.
4. Type the Actual module address.
5. Click OK.
The controller uses the translated address but CIP safety protocol requires the
actual address of the device.
Set the Safety Network
Number (SNN)
The assignment of a time-based SNN is automatic when adding new safety
I/O devices. Subsequent safety device additions to the same network are
assigned the same SNN defined within the lowest address on that CIP safety
network.
For most applications, the automatic, time-based SNN is sufficient. However,
there are cases when the manipulation of an SNN is required.
See Assigning the Safety Network Number (SNN)
on page 67.
Unicast Connections on
EtherNet/IP Networks
Unicast connections are point-to-point connections between a source and a
destination node. You do not have to enter a minimum or maximum RPI range
or default value for this type of connection.
To configure unicast connections, choose the Connection tab and check Use
Unicast Connection over EtherNet/IP.
TIP
If you configured the IP address with the rotary switches, this is the address
you set on the device. Alternately, the Actual module address is the same
address shown on the device’s Internet Protocol tab.
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