PI System Data Resiliency · Audit Trail
Site teams, contractors, co-ops, and external vendors can change tags, AF attributes, templates, or calculations without understanding the downstream consequences. In a complex PI estate, even a small configuration change can cascade across displays, analyses, reports, and compliance workflows before anyone notices.
Tag attributes, compression settings, engineering units, and descriptor fields changed with no record of when, by whom, or what depended on the old value.
AF calculation expressions modified without knowing whether the same template powers one asset or ten thousand, or which displays and reports depend on the output.
When something breaks after a change window, teams spend days diagnosing what changed and who made it, instead of minutes finding and fixing the root cause.
Tycho tracks changes across the PI configuration layer so that every modification has a record. This is not a heavyweight governance system — it is practical operational visibility for the people who manage PI day to day.
Track changes to tag attributes: compression settings, engineering units, descriptors, point source, security, and other configuration fields.
Changes to AF attribute definitions, mappings, and references that affect what an attribute returns and how it is used downstream.
Expression edits, analysis enable/disable events, and calculation logic changes across templates and individual elements.
Template-level changes that propagate across all elements inheriting from that template — often the highest-impact change category.
Modifications to display structure, symbol bindings, and embedded calculations that affect what operators see.
Changes to interface and connector settings that affect which tags receive data and from which source systems.
For any change — planned or already made — Tycho surfaces what displays, analyses, reports, and downstream consumers depend on the changed object. This supports pre-change review and post-change root cause analysis without hours of manual investigation.
Understand the full dependency graph of any tag or AF object before making a modification. Know who will be affected, which displays will be impacted, and what downstream systems consume the data.
When something breaks, trace it immediately. What changed? When? Who made the change? Which dependent object is now failing? Root cause in minutes, not days.
Some teams work around native PI audit configurations because of performance or operational concerns. Tycho provides a practical operational view of change history and impact — visibility first, not a heavyweight approval workflow. Teams get the traceability they need without adding friction to day-to-day PI administration.
Surface the configuration changes, expression edits, and dependency impacts that are invisible in day-to-day PI operations.
Tycho Data helps teams ensure their operational data is reliable, accessible, and actionable.