Nodes of different colours represent the following:
Solid arrows point from a parent (sub)module to the submodule which is descended from it. Dashed arrows point from a module being used to the module or program unit using it. Where possible, edges connecting nodes are given different colours to make them easier to distinguish in large graphs.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| character(len=*), | intent(in) | :: | SourceName | |||
| integer, | intent(in) | :: | EquipFlowCtrl | |||
| integer, | intent(inout) | :: | CompIndex | |||
| logical, | intent(in) | :: | RunFlag | |||
| logical, | intent(in) | :: | FirstHVACIteration | |||
| logical, | intent(inout) | :: | InitLoopEquip | |||
| real(kind=r64), | intent(inout) | :: | MyLoad | |||
| real(kind=r64), | intent(inout) | :: | MaxLoad | |||
| real(kind=r64), | intent(inout) | :: | MinLoad | |||
| real(kind=r64), | intent(inout) | :: | OptLoad | |||
| logical, | intent(in) | :: | GetSizingFactor | |||
| real(kind=r64), | intent(inout) | :: | SizingFactor | 
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed arrows point from an interface to procedures which implement that interface. This could include the module procedures in a generic interface or the implementation in a submodule of an interface in a parent module. Where possible, edges connecting nodes are given different colours to make them easier to distinguish in large graphs.
SUBROUTINE SimWaterSource(SourceName,EquipFlowCtrl,CompIndex,RunFlag,FirstHVACIteration, &
                              InitLoopEquip,MyLoad,MaxLoad,MinLoad,OptLoad,GetSizingFactor,SizingFactor)
          ! SUBROUTINE INFORMATION:
          !       AUTHOR         Edwin Lee
          !       DATE WRITTEN   October 2012
          !       MODIFIED       na
          !       RE-ENGINEERED  na
          ! PURPOSE OF THIS SUBROUTINE: This is the water source model driver.  It
          !  gets the input for the models, initializes simulation variables, call
          !  the appropriate model and sets up reporting variables.
          ! METHODOLOGY EMPLOYED: na
          ! REFERENCES: na
          ! USE STATEMENTS:
  USE InputProcessor, ONLY: FindItemInList
  USE DataGlobals,    ONLY: BigNumber
  IMPLICIT NONE
          ! SUBROUTINE ARGUMENT DEFINITIONS:
  CHARACTER(len=*), INTENT(IN) :: SourceName             ! user-specified name for this component
  INTEGER, INTENT(IN)          :: EquipFlowCtrl      ! Flow control mode for the equipment
  INTEGER, INTENT(INOUT)       :: CompIndex          ! HX number pointer
  LOGICAL , INTENT(IN)         :: RunFlag            ! simulate HX when TRUE
  LOGICAL , INTENT(IN)         :: FirstHVACIteration ! initialize variables when TRUE
  LOGICAL, INTENT(INOUT)       :: InitLoopEquip      ! If not zero, calculate the max load for operating conditions
  REAL(r64), INTENT(INOUT)     :: MyLoad             ! loop demand component will meet
  REAL(r64), INTENT(INOUT)     :: MaxLoad
  REAL(r64), INTENT(INOUT)     :: MinLoad
  REAL(r64), INTENT(INOUT)     :: OptLoad
  LOGICAL, INTENT(IN)          :: GetSizingFactor    ! TRUE when just the sizing factor is requested
  REAL(r64), INTENT(INOUT)     :: SizingFactor       ! sizing factor
          ! SUBROUTINE PARAMETER DEFINITIONS:
          ! na
          ! INTERFACE BLOCK SPECIFICATIONS
          ! na
          ! DERIVED TYPE DEFINITIONS
          ! na
          ! SUBROUTINE LOCAL VARIABLE DECLARATIONS:
  INTEGER :: SourceNum            ! HX number pointer
            !GET INPUT
      IF (GetInput)  THEN
        CALL GetWaterSource()
        GetInput = .FALSE.
      END IF
        ! Find the correct Chiller
      IF (CompIndex == 0) THEN
        SourceNum = FindItemInList(SourceName,WaterSource%Name,NumSources)
        IF (SourceNum == 0) THEN
          CALL ShowFatalError('SimWaterSource: Specified heat exchanger not one of Valid heat exchangers='//TRIM(SourceName))
        ENDIF
        CompIndex=SourceNum
      ELSE
        SourceNum=CompIndex
        IF (SourceNum > NumSources .or. SourceNum < 1) THEN
          CALL ShowFatalError('SimWaterSource:  Invalid CompIndex passed='//  &
                              TRIM(TrimSigDigits(SourceNum))// &
                              ', Number of Units='//TRIM(TrimSigDigits(NumSources))//  &
                              ', Entered Unit name='//TRIM(SourceName))
        ENDIF
        IF (WaterSource(SourceNum)%CheckEquipName) THEN
          IF (SourceName /= WaterSource(SourceNum)%Name) THEN
            CALL ShowFatalError('SimWaterSource: Invalid CompIndex passed='//  &
                                TRIM(TrimSigDigits(SourceNum))// &
                                ', Unit name='//TRIM(SourceName)//', stored Unit Name for that index='//  &
                                TRIM(WaterSource(SourceNum)%Name))
          ENDIF
          WaterSource(SourceNum)%CheckEquipName=.false.
        ENDIF
      ENDIF
      IF (InitLoopEquip) THEN
        CALL InitWaterSource(SourceNum,RunFlag,MyLoad,FirstHVACIteration)
        CALL SizeWaterSource(SourceNum)
        IF (GetSizingFactor) THEN
          SizingFactor = WaterSource(SourceNum)%SizFac
        END IF
        MaxLoad = BigNumber
        MinLoad = 0.0d0
        OptLoad = BigNumber
        RETURN
      END IF
    CALL InitWaterSource(SourceNum,RunFlag,MyLoad,FirstHVACIteration)
    CALL CalcWaterSource(SourceNum,MyLoad,Runflag,EquipFlowCtrl)
    CALL UpdateWaterSource(SourceNum)
  RETURN
END SUBROUTINE SimWaterSource