Software Development

From Lights to Insight: Why ProAlert Replaces the Old Andon Tree

Why modern ProAlert replaces traditional Andon light trees—with direct notifications, full event logging, OEE integration, and MES-ready data for actionable insights.

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From Lights to Insight: Why ProAlert Replaces the Old Andon Tree

From Lights to Insight: Why ProAlert Replaces the Old Andon Tree

In many plants, the Andon system is still a light tree—a familiar stack of red, yellow, and green. It works… but only up to a point. ProAlert replaces that legacy approach with a modern Andon that directly notifies the intended team, records every event, and uses those numbers to build the Availability and Performance pillars of OEE.

The Problem With Old Andon Trees

Traditional light trees do one thing: signal. They typically can’t:

  • Notify the right people directly.
  • Capture the exact reason for the call with timestamps and resolution notes.
  • Track downtime duration or categorize it consistently.
  • Show how events affect productivity over a shift, line, or plant.

Once the light goes out, the record of what happened is gone—and so is the chance to learn from it.

ProAlert: Andon Reimagined

ProAlert doesn’t just signal a problem—it manages the entire event and measures the impact.

  • Direct Notifications → The intended team is alerted instantly—no guessing who should respond.
  • Full Event Logging → Every call is recorded with reason codes, timestamps, and resolution notes.
  • OEE Integration → Downtime and performance hits feed directly into Availability and Performance.
  • MES‑Ready Data → All recorded events can be exported or integrated into your MES, turning live shop‑floor activity into enterprise‑wide insight.
Bottom line: Old Andon says “something is wrong.” ProAlert says “what’s wrong, who’s fixing it, how long it took, and how it impacts OEE.”

Why It Matters

When Andon events automatically feed into OEE—and flow upstream to your MES—you can:

  • Identify top downtime causes and repeat offenders.
  • Measure response speed and closure effectiveness by team.
  • Analyze trends across shifts, lines, and plants.
  • Quantify the cost of lost time and justify improvements.

That’s how you stop repeating yesterday’s downtime—and start preventing tomorrow’s.