Event Query

The ECP event query functionality is based on SparkplugB protocol lifecycle messages (Birth/Death), providing comprehensive monitoring and historical tracking of edge node and device online/offline status. Through unified event management, you can grasp the connection status changes of all components in the entire industrial data network in real-time.

Functionality Overview

The event query functionality automatically records and displays edge node and device online/offline events by monitoring lifecycle messages in the SparkplugB protocol. This event information is crucial for device operations, fault diagnosis, and system monitoring.

Supported Event Types

Event Type	Description	Trigger Condition
NBIRTH	Edge node online	SparkplugB northbound application in NeuronEX successfully connects and reports node information
NDEATH	Edge node offline	SparkplugB northbound application in NeuronEX disconnects or exits abnormally
DBIRTH	Device online	Southbound driver successfully connects and starts reporting device data
DDEATH	Device offline	Southbound driver disconnects or device goes offline

Interface Layout

The event query page adopts a clean layout design, mainly including the following areas:

Query Criteria Area

UID Input Box:

• Label: Enter the UID of edge node or device
• Functionality: Supports entering the complete node or device UID for precise queries
• Example: spBv1.0/Factory1/ZoneB/Line2/Siemens_PLC

Time Range Selection:

• Provides preset time options: Last 1 day, Last 2 days, Last 7 days, Last 30 days
• Default selection: Last 2 days
• Supports custom time range selection

Query Button:

• Click to execute query operation
• Supports Enter key shortcut query

Event List Area

Display query results in table format, including the following columns:

Column Name	Description	Example
UID	Unique identifier of edge node or device	spBv1.0/Factory1/ZoneB/Line2
Node Type	Entity type (node/device)	node / device
Event Type	Specific event type	NBIRTH / NDEATH / DBIRTH / DDEATH
Time	Specific timestamp when the event occurred	2025-10-9 16:14:49

Query Methods

1. Precise Query

Enter the complete edge node or device UID to query all event records of a specific entity:

Query Example:

• Input: spBv1.0/Factory1/ZoneB/Line2
• Result: Display all online and offline events of this edge node

2. Time Range Query

Select a time range to query all events within the specified time period:

Time Options:

• Last 1 day: Query events from the past 24 hours
• Last 2 days: Query events from the past 48 hours (default)
• Last 7 days: Query events from the past week
• Last 30 days: Query events from the past month

3. Global Query

Without entering UID or selecting a time range, directly click the query button to view all historical event records.

4. Combined Query

Use both UID and time range conditions simultaneously to achieve more precise queries:

Example Scenario:

• UID: spBv1.0/Factory1/ZoneA/Line1/OPCUA_Server
• Time: Last 7 days
• Result: Display all online/offline events of this device in the past week