Rockwell Automation Publication 1756-RM012B-EN-P - April 2018 35
CIP Safety and Safety Network Numbers Chapter 4
SNNs for Out-of-box Devices
Out-of-box CIP Safety I/O devices do not have an SNN. The SNN is set when
a configuration is sent to the device by the GuardLogix controller that owns
the device.
IMPORTANT To add a CIP Safety I/O device to a configured GuardLogix system (the SNN is
present in the GuardLogix controller), the replacement CIP Safety I/O device
must have the correct SNN applied before it is added to the CIP Safety
network.
For detailed information, see the ‘Replace a Safety I/O Device’ procedure in
the user manual for the controller:
• ControlLogix 5580 and GuardLogix 5580 Controllers User Manual,
publication 1756-UM543
• CompactLogix 5380 and Compact GuardLogix 5380 User Manual,
publication 5069-UM001
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