Event and Alarm Log

The event and alarm log standardizes faults, alarms, warnings, and HMI messages. The goal is to provide a consistent view of the frequency, duration, category, impact, and acknowledgment behavior of messages.

Typical fields:

timestamp: 1712052000000
assetId: line-1
errorId: E-4711
title: Material shortage
description: Station 20 feeder empty
category: ORGANIZATIONAL
acknowledge: MANUAL
statusLight: RED
status: ACTIVE
impact: STOPPED
internalHourOfDay: 8

For aggregated analyses, the duration of a report is also calculated; for example, errorDuration.

Incident metadata makes raw incident numbers usable for business purposes. This includes the title, description, category, impact on production, status indicator, and analysis approval for an incident.

A good event and alarm log separates technical detection from business analysis. This allows a PLC message to be recategorized later without losing the raw data.