Rockwell-automation Ethernet Design Considerations Reference Manual Manual de usuario descargar pdf (Pagina 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

1783-ETAP

1756 GuardLogix

1734 POINT I/O

1783-ETAP

PowerFlex

1794 FLEX I/O

1768 CompactLogix

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Rockwell-automation Ethernet Design Considerations Reference Manual Manual de usuario Pagina 73