Irrigation Module's Status Output - Universal Devices ISY-994i User Manual

• Water Applied per Irrigation Cycle - amount of water the user's irrigation program
applies to the soil during each run.
• Allowable Depletion - how much water is allowed to leave (be depleted from) the
soil before the next irrigation cycle.
17.2.3

Irrigation Module's Status Output

These variables are calculated from the WeatherBug data. They can be used in the program
module for customizing the irrigation system.
• Evapotranspiration - approximation of the total amount of water leaving via a
combination of soil evaporation and plant transpiration.
• Irrigation Requirement - amount of water to be applied based on the accumulation
of previous day(s) water deficits.
• Yesterday's Water Deficit - total amount of water that has evapotranspired during a
twenty four hour window from the day before.
17.2.4 Irrigation Module's Commands
These are commands that can be used in ISY programs.
• Irrigation - Cycle Complete - triggers the module's calculations for after water has
been applied.
• Irrigation - Reset Variables - triggers a reset of the module's Irrigation Requirement
variable.
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