Rockwell Automation Ethernet Design Considerations Reference Manual - Manual (Page 73)

Rockwell Automation Publication ENET-RM002C-EN-P - May 2013 73
EtherNet/IP Protocol Chapter 4
CIP Safety CIP Safety is an extension to the application layer that provides a set of highly
integrated safety services that leverage the underlying communication stacks of
the standard CIP networks to transport data from a source to a destination. CIP
Safety is certified to be compliant with the functional safety standard IEC 61508
up to safety integrity level (SIL) 3.
The CIP Safety end-to-end protocol gives responsibility to ensuring safety to the
end nodes—rather than the bridges, routers, or intermediate nodes. CIP Safety
cannot prevent communication errors from occurring, but if an error does occur
in the transmission of data or in the intermediate router, the end device detects
the failure and takes the appropriate action. Because the safety coding and not the
underlying communication layers enforce the integrity of the data, the underlying
communication layers can be interchanged and intermixed even across subnets.
CIP Safety lets you mix standard and safety devices on the same open network.
Stratix
1791ES
Guard I/O™
1768 Compact GuardLogix®
Camera POINT Guard I/O™
POINT Guard I/O
1783-ETAP
HMI
1738 ArmorPOINT I/O
Stratix
Stratix 1783-ETAP
1756 GuardLogix
1734 POINT I/O
1783-ETAP
PowerFlex
1794 FLEX I/O 1768 CompactLogix