Virtual tag functions

Functions available in a virtual tag read or write script, grouped by category.

These functions are available in virtual tag scripts, which run server-side (on the Edge) to compute a tag’s value. Read and write scripts don’t expose the same set — each function’s page says where it can be used. Tags and alarms are always addressed by their path string.

Categories

• Tags — read and write other tags and their history.
• Alarms — read alarm state.
• Time — work with timestamps.
• Conversions — pack and unpack register values.

External data (read scripts only, each needs its source available):

• SMHI — weather data.
• ClimaCheck — refrigeration analysis.
• Weatherstack — current weather.
• Heat pump — heat-pump verification.

From integrations (each works only once its integration is installed):

• Nord Pool — electricity prices.
• E.ON — metering measurements.
• Metry — meter readings.
• Myrspoven — building-control writes.
• Energy Machines (EMV) — heat-pump indicators.

Write scripts:

• Input — the value being written to the tag.