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Meddle Docs

Chart Connector

Overview

Section titled “Overview”

The Chart connector provides real-time visualization of data streams.

Connector Type: MeddleChart

Limitations: Maximum 15 data points displayed

Configuration

Section titled “Configuration”
{
  "type": "MeddleChart",
  "config": {}
}

How It Works

Section titled “How It Works”
  1. Receives data payloads
  2. Displays last 15 data points
  3. Updates in real-time as new data arrives
  4. Automatically scrolls to show latest data

Use Cases

Section titled “Use Cases”
  1. Monitor sensor values in real-time
  2. Debug data flows during development
  3. Visualize process parameters on dashboards
  4. Quick data inspection without external tools

Example Workflow

Section titled “Example Workflow”
OpcuaReader → Filter → Chart
                ↓
          InfluxDb2Writer
  1. Read sensor data
  2. Filter relevant fields
  3. Display in chart
  4. Store in database

Best Practices

Section titled “Best Practices”
  • Use for monitoring and debugging
  • Limit to important metrics (max 15 points)
  • Combine with database storage for historical data
  • Place at end of workflow for minimal impact

Limitations

Section titled “Limitations”
Section titled “Related Connectors”