Safety Signature Hierarchy
The following image shows an example of the safety signature hierarchy:
- A signature with ID and time stamp exists for each element in the hierarchy.
- Expand the safety signature at the top to view its underlying elements.
- Expand a parent element to view its underlying child elements.
Safety Signature Hierarchy
Item | Description |
|---|---|
A | Safety signature |
B | Safety signature elements |
Aggregate Signatures
Safety elements that include a collection of tags and parameters have aggregate signatures. An aggregate signature represents the validity of all tags and parameters within the element.
The following elements have aggregate signatures:
- Controller-scoped safety tags
- Safety program parameters and tags
- Safety Add-On Instructions
- Safety mapped tags
- Safety I/O connections
If one of the preceding elements has a collection with no members, such as no controller-scoped safety tags, the aggregate signature value appears as 64 zeros.
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