Fixes next idle machine for level control

src/specificClass.js

@@ -1,5 +1,6 @@
 const EventEmitter = require('events');
 const {logger,configUtils,configManager,childRegistrationUtils,MeasurementContainer,coolprop,interpolation} = require('generalFunctions');
+
 class PumpingStation {
   constructor(config = {}) {
     this.emitter = new EventEmitter();
@@ -192,7 +193,10 @@ class PumpingStation {
   }
 
   _nextIdleMachine() {
-    return Object.values(this.machines).find(m => !m._isOperationalState());
+    return Object.values(this.machines).find((machine) => {
+      const position = machine?.config?.functionality?.positionVsParent;
+      return ( position === 'downstream' || position === 'atEquipment') && !machine._isOperationalState();
+    });
   }
 
   //control logic
@@ -370,6 +374,7 @@ class PumpingStation {
     }
   }
 
+
   _onLevelMeasurement(position, value, context = {}) {
     const levelSeries = this.measurements.type('level').variant('measured').position(position);
     const levelMeters = levelSeries.getCurrentValue('m');
@@ -688,11 +693,13 @@ class PumpingStation {
     return 'steady';
   }
 
+
   /* ------------------------------------------------------------------ */
   /* Basin Calculations                                                 */
   /* ------------------------------------------------------------------ */
 
   initBasinProperties() {
+
     const volEmptyBasin = this.config.basin.volume;
     const heightBasin = this.config.basin.height;
     const heightInlet = this.config.basin.heightInlet;
@@ -718,12 +725,7 @@ class PumpingStation {
       minVolOut
     };
 
-    this.measurements
+    this.measurements.type('volume').variant('predicted').position('atEquipment').value(maxVolOverflow).unit('m3');
-      .type('volume')
-      .variant('predicted')
-      .position('atEquipment')
-      .value(maxVolOverflow)
-      .unit('m3');
 
     this.logger.debug(
       `Basin initialized | area=${surfaceArea.toFixed(2)} m2, max=${maxVol.toFixed(2)} m3, overflow=${maxVolOverflow.toFixed(2)} m3`
@@ -771,7 +773,7 @@ module.exports = PumpingStation;
 /* ------------------------------------------------------------------------- */
 /* Example usage                                                             */
 /* ------------------------------------------------------------------------- */
-
+/*
 if (require.main === module) {
   const Measurement = require('../../measurement/src/specificClass');
   const RotatingMachine = require('../../rotatingMachine/src/specificClass');