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Burst Polling

Temporarily increase polling frequency on-demand to capture transient events.

Burst Polling Screenshot placeholder: Burst polling configuration

What is Burst Polling?

Burst polling temporarily switches specific tags to high-frequency polling when triggered by a remote command.

Use Cases: - Motor startup sequences - Alarm conditions - Troubleshooting - Event capture

How It Works

  1. Tags configured with is_burst=true
  2. Normal operation: tags poll at regular rate
  3. DCMD trigger: burst = 1 (or true)
  4. Burst tags switch to high-frequency polling
  5. After duration expires, return to normal

Configuration

Tag Setup

Burst Tag Config Screenshot placeholder: Burst tag configuration

  1. Edit tag
  2. Enable Is Burst
  3. Save tag

Burst Settings

Configure per device: - Burst Poll Rate: Seconds (e.g., 0.5 for 2 Hz) - Burst Duration: Seconds (e.g., 60)

Triggering Burst

Via DCMD

SCADA publishes to: 

spBv1.0/{group}/DCMD/{node}/{device}

With payload: 

{
  "metrics": [{
    "name": "burst",
    "value": 1,
    "type": "Boolean"
  }]
}

Or with optional overrides: 

{
  "metrics": [
    {"name": "burst", "value": true},
    {"name": "burst poll rate", "value": 0.25},
    {"name": "burst duration", "value": 120}
  ]
}

Via UI (if available)

  1. Navigate to device
  2. Click Trigger Burst
  3. Confirm

Monitoring

During burst: - Status indicator shows "Bursting" - Remaining duration displayed - Can manually stop burst

Best Practices

  • Use for event capture only
  • Don't burst too many tags simultaneously
  • Set reasonable durations
  • Monitor system load

Next Steps