Detect bad and stale PI data
Find PI Points with stale, bad, missing, frozen or out-of-range values, undercompression signals, or metadata rule violations.
PI Point health →
Why PI System health problems go unnoticed
Stale tags, bad values, broken AF attributes, failing analyses, and PI Vision displays with missing data sources can stay buried until they show up as wrong numbers, slow dashboards, or unreliable calculations.
PI Nexus+ gives administrators one place to find those issues, understand their impact, and trace them back to the PI Points, AF objects, analyses, and displays involved.
What needs attention right now?
PI Nexus+ helps answer the operational questions that usually take hours of manual investigation.
What is unhealthy?
Where is it used?
What depends on it?
Find the PI System problems that hide in plain sight.
PI Nexus+ scans across PI Data Archive, Asset Framework, AF Analyses, and PI Vision to surface stale data, bad values, broken references, unhealthy calculations, and display issues before they become operational noise.
See AF attribute health clearly
Review AF Attributes with value quality, data references, config strings, linked PI Points, dynamic limits, and health context in one searchable view.
AF health →Catch unhealthy AF analyses
Surface stopped, broken, or problematic AF Analyses with rule details, service load, inputs, outputs, owning elements, and template context.
Analysis health →Find broken PI Vision displays
Identify PI Vision displays that rely on missing, stale, or unhealthy data sources, with ownership and usage context for faster cleanup.
PI Vision impact →Trace what depends on what
Follow relationships between PI Points, AF Attributes, AF Analyses, AF Elements, templates, and PI Vision displays to understand impact quickly.
Dependency graph →Monitor servers and interfaces
Check PI servers and interfaces automatically and get email alerts when data stops arriving or an interface degrades.
Monitoring →Sample PI System health scan results
PI Nexus+ turns scan results into clear health findings across PI Points, AF Attributes, AF Analyses, PI Vision displays, and templates, so administrators can prioritize cleanup by severity and impact.
| Area | What PI Nexus+ Finds | Severity | Example Count |
|---|---|---|---|
| PI Points | Stale, bad, missing, or out-of-range values | High | 427 |
| AF Attributes | Broken references, bad values, and unhealthy linked tags | Critical | 86 |
| AF Analyses | Stopped, failed, or unhealthy calculations | High | 34 |
| PI Vision | Displays with missing or unhealthy data sources | High | 51 |
| AF Templates | Templates concentrating repeated downstream issues | Medium | 12 |
| Known Exceptions | Suppressed issues documented with reasons | Info | 143 |
Representative example only. Actual findings depend on system size, configured rules, scan targets, and data quality policies.
PI server, interface and data monitoring
When data stops arriving or a tag becomes unreliable, your team needs to know. PI Nexus+ monitors your PI servers, interfaces and data health and sends configured email notifications, helping you spot problems before someone reports an incorrect value or a broken dashboard.
See every site and server at a glance.
The sites dashboard shows the health of each location and drills down into every PI Data Archive, AF Server, AF Database and PI Vision instance, so you know where a problem sits before you open a single tool.
- Health per site and per server, with the trend since yesterday.
- Service health plus the health of the PI Points, AF databases, displays and interfaces each server holds.
- Health by type across all sites: PI Points, AF Attributes, AF Analyses and PI Vision.
Follow the interfaces that keep your data flowing.
See which interfaces collect your PI data and whether they are operating normally. When an interface has a problem, understand which tags depend on it and where your investigation should start.
- Keep track of interface health in one place, with host, PointSources and mapped tags.
- Optionally monitor interface runtime through UniInt health points.
- Receive email alerts when a monitored interface's condition worsens or recovers.
- See which tags and downstream objects may be affected.
Know when your data needs attention.
A tag that stops updating or reports a bad value can leave dashboards and calculations relying on unreliable data. PI Nexus+ checks data health automatically and can notify your team by email when problems are detected.
- Spot outdated, invalid, or unexpectedly unchanged tag values.
- Run health checks automatically, with Low, Medium or High scan intensity.
- Bring detected issues to your team's attention by email.
- Understand which analyses and displays rely on the affected data.
Monitoring coverage and notification timing depend on your connected systems and configured monitoring and email settings.
AF analysis recalculation
Correcting a source value is only part of the job when other calculations depend on it. PI Nexus+ finds the affected analyses and recalculates their results for the period that needs attention.
Recalculate affected analyses.
- Find calculations affected by a data problem.
- Recalculate historical results after source data is corrected.
- Include dependent analyses and choose to fill gaps or replace existing results.
- Get suggestions when monitored tags recover from bad or stale periods.
- Schedule recalculation hourly, daily or weekly for late or manually entered data, or run a plan now.
Supports eligible AF Expression analyses. Suggestions never start a recalculation on their own. Recalculation uses available source history; it does not restore missing source data.
PI Point compression tuning
Improve data fidelity without storing every fluctuation. The Automated Compression Analyzer scans historical raw data for each PI Point and calculates a recommended compression setting based on the data fidelity you need.
Review the raw snapshot, archived values, and recommended trend side by side before making a change. Apply recommendations one PI Point at a time, approve a selected group, or let PI Nexus+ update thousands of tags automatically.
Set the fidelity target
Choose how closely the archived trend should follow the incoming raw data.
Compare before applying
Use the built-in trend to see what the recommended compression would preserve.
Choose your level of control
Approve changes manually or automate updates across large PI Point inventories.
PI System health in detail
PI Nexus+ connects inventory, health, issues, and dependencies so administrators can move from a warning to the affected PI Points, AF objects, analyses, and PI Vision displays without manual cross-checking.
Find stale, bad, and missing tag data faster.
Build a searchable PI Point inventory across Data Archives, evaluate latest value quality, and highlight stale, bad, missing, out-of-range, and rule-based issues.
- Which PI Points are unhealthy?
- Which tags have stale or bad latest values?
- Where is this tag used across AF, analyses, and PI Vision?
Understand the AF context behind bad data.
Review AF Elements and Attributes with health context, linked PI Points, issue counts, derived template relationships, analyses, and dependency information in one place.
- Which AF objects are unhealthy?
- Which elements, attributes, and templates are affected?
- Which issues repeat across related AF structures?
Catch calculations that are stopped, failing, or unhealthy.
Surface problematic AF Analyses with rule details, service load, inputs, outputs, owning elements, and template relationships so calculation issues are easier to prioritize.
- Which analyses are stopped or unhealthy?
- Which inputs and outputs are involved?
- Which templates or elements concentrate analysis issues?
Find displays affected by missing or unhealthy data sources.
Inventory PI Vision displays, track ownership and access context, and identify dashboards that rely on stale, missing, or unhealthy PI Points and AF Attributes.
- Which displays are broken or at risk?
- Which data sources cannot be resolved?
- Who owns or uses the affected displays?
Trace impact before cleanup, troubleshooting, or change.
Follow relationships between PI Points, AF Attributes, AF Analyses, AF Elements, templates, and PI Vision displays to understand what depends on what.
- Where is this tag or attribute used?
- What downstream objects depend on it?
- What will be affected if it changes?
- Which interfaces and external systems feed this data?
Watch PI Nexus+ in action
PI Nexus+ questions and pricing
What PI Nexus+ checks, how alerts and recalculation work, and how the annual subscription is priced.
What does PI Nexus+ check?
PI Nexus+ checks PI Points, AF Attributes, Elements, Templates and Analyses, PI Vision displays, PI interfaces and the servers they run on. It finds stale, bad, missing, frozen and out-of-range data, broken references, unhealthy analyses and displays with missing data sources, and shows what depends on each problem.
Can PI Nexus+ alert us when something breaks?
Yes. PI Nexus+ sends email notifications for scan results, for PI interfaces that degrade, escalate or recover, and for new recalculation suggestions. Coverage and timing depend on your monitoring and email settings.
Does PI Nexus+ recalculate analyses automatically?
Only when you ask it to. You can submit a recalculation, or save a scheduled plan that runs hourly, daily or weekly. Suggestions after bad or stale data periods are shown for review and never start a recalculation on their own.
How is PI Nexus+ priced?
PI Nexus+ uses annual, size-based subscription tiers. Your PI System’s PI Point count determines which tier applies. The number of PI Data Archives you scan does not affect pricing.
What is included in the subscription?
The subscription includes PI Nexus+ usage, product updates and customer support for the subscription term. Multi-year subscriptions are available and may include discounted renewal years.
Can I request a trial before buying?
Yes. You can request a trial to evaluate PI Nexus+ in your own AVEVA PI System environment.
Try PI Nexus+ on your own PI System
Explore PI System health, monitoring, and dependency insights in your own environment.
How to check AVEVA PI System health
Learn how PI administrators can review health across PI Points, Asset Framework, AF Analyses, and PI Vision, including stale data, broken references, dependency impact, and change tracking.
