Function Blocks¶

• Actuator
  • Fan3Stage (FunctionBlock)
  • Fan3StageState (Enum)
  • HVAC_Coil (FunctionBlock)
    • Functionality
      • SetError (Method)
  • HVAC_RotaryHeatExchanger (FunctionBlock)
    • Functionality
    • optional cleaning operation
    • malfunction detection
    • malfunction locking
      • SetError (Method)
  • HeatCool2Linear (FunctionBlock)
  • IActuatorContinuous (Interface)
    • DateTimeProvider (Property)
    • Enable (Property)
    • ErrorIdOut (Property)
    • ErrorOut (Property)
    • Reset (Property)
    • Setpoint (Property)
  • IActuatorOnOff (Interface)
    • DateTimeProvider (Property)
    • ErrorIdOut (Property)
    • ErrorOut (Property)
    • IsOn (Property)
    • RequestOn (Property)
    • Reset (Property)
  • IValveContinuous (Interface)
  • PumpOnOff (FunctionBlock)
    • Application example
    • Device examples
    • Functionality
    • on / off delay
    • blocking protection
    • command execution monitoring
    • malfunction detection
    • malfunction locking
      • DateTimeProvider (Property)
      • ErrorIdOut (Property)
      • ErrorOut (Property)
      • IsOn (Property)
      • RequestOn (Property)
      • Reset (Property)
  • ValveContinuous (FunctionBlock)
    • Functionality
    • Blocking protection
      • DateTimeProvider (Property)
      • Enable (Property)
      • ErrorIdOut (Property)
      • ErrorOut (Property)
      • Reset (Property)
      • Setpoint (Property)
  • ValveSixWay (FunctionBlock)
    • Application example
    • Device examples
    • Functionality
  • ValveThermo (FunctionBlock)
    • Application example
    • Device examples
    • Functionality
    • Normally closed valves and warmup:
    • Blocking protection
      • DateTimeProvider (Property)
      • Enable (Property)
      • ErrorIdOut (Property)
      • ErrorOut (Property)
      • Reset (Property)
      • Setpoint (Property)
  • ValveThermoWarmupState (Enum)
  • WindowActuator (FunctionBlock)
    • Application example
    • Device examples
    • Functionality
  • WindowActuatorState (Enum)
• Aggregates
  • Examples
    • ExampleFancoil3StageAggregate (FunctionBlock)
  • Fancoil3Stage (FunctionBlock)
    • Functionality
    • Control of fan speed dependent on valve position or control deviation
  • FancoilContinuous (FunctionBlock)
    • Application example
    • Device examples
    • Why does CODESYS Building Automation library contain a fan coil unit control strategy, even if some fan coil units come with integrated controller?
    • Functionality
    • Characteristic curve of fan speed
• Assemblies
  • FourToTwoPipes (FunctionBlock)
    • Application example
    • Functionality
• Control
  • CommandExecutionMonitoring (FunctionBlock)
  • CommandVariable (FunctionBlock)
  • HVAC_AntiFreezeControlMonitor (FunctionBlock)
    • Application example
    • Functionality
  • HVAC_AntiFreezeControlSensor (FunctionBlock)
    • Application example
    • Functionality
  • HVAC_AntiFreezeControlStartup (FunctionBlock)
    • Application example
    • Functionality
  • RedundantPlantControl8 (FunctionBlock)
  • SequenceControl (FB)
    • Sequence combinations:
    • Sequence relations:
    • Control algorithm inputs:
    • Relation between setpoints sequences:
    • Other control characteristics:
  • Integrator dynamics
  • Reset
  • “Anti windup” (integration limit)
  • “Soft set”
  • SequenceControlSequences (Enum)
  • SequenceSwitch (FunctionBlock)
• Examples
  • ExampleAirConditioning1 (FB)
  • Air types
    • Sequence control heater coil / cooler coil
    • Hints
    • Caveats
  • ExampleAirConditioning2 (FB)
  • Air types
    • Sequence control damper / heater coil / cooler coil
    • Recirculation air admixing and energy selection
    • Minimum outdoor air ratio
    • Water side anti-freeze for heater coil
    • Air side anti-freeze
    • Hints
    • Caveats
  • ExampleHeating (FunctionBlock)
    • Heating circuit operation
    • Night time setpoint reduction vs. switching off heating circuit operation
    • Economy mode
    • Optional anti-freeze
    • Caveats
  • ExampleHotWater (FunctionBlock)
    • 2 point control of boiler temperature
    • Legionella prevention
    • Optional unload protection
    • Caveats
  • ExampleRoomAutomation (FB)
  • Air types
    • Presence controlled energy level
    • Night cooling
    • Energy lock
    • Sommer compensation
    • Fast heat / cool
    • Window alarm
    • Manual fan control
    • Hints
    • Caveats
  • ExampleVariantsRoomControlFCUSimple (FunctionBlock)
  • Examples_ImagePool (ImagePool)
• Misc
  • DailyMeanTemperature (FunctionBlock)
    • When does the daily mean temperature gets valid?
    • “Warp clock”-enabled
  • HeatingCharacteristicCurve (FunctionBlock)
    • Application example
    • Functionality
  • HysteresisReal (FunctionBlock)
  • LogBoolChange (FunctionBlock)
  • RoomSetpoint (FunctionBlock)
    • “effective comfort setpoint”
    • Setpoint outputs - whats the difference
• Optimization
  • EnergyLevelSetpoint (FunctionBlock)
    • VDI 3814 reference
  • HeatCoolUsingOutdoorAir (FB)
    • Functionality
  • Cooling mode
  • Heating mode
• Time related
  • DateTimeSplit (FunctionBlock)
  • MaxOnTime (FunctionBlock)
    • “Warp clock”-enabled
  • MinOnOffTime (FunctionBlock)
    • “Warp clock”-enabled
  • OnOffDelay (FunctionBlock)
    • “Warp clock”-enabled
  • OperationalTime (FunctionBlock)
    • “Warp clock”-enabled
  • PeriodicTimer (FunctionBlock)
    • “Warp clock”-enabled
  • WarpClock (FunctionBlock)
    • AddTime (Method)
    • ComputeWarpFactor (Method)
    • GetDateTime (Method)
    • GetLocalSystemTime (Method)
    • GetUtcSystemTime (Method)