diff --git a/src/groupcontrol.test.js b/src/groupcontrol.test.js
index 96c04d2..eda509b 100644
--- a/src/groupcontrol.test.js
+++ b/src/groupcontrol.test.js
@@ -1,288 +1,345 @@
-// ...existing code...
-const MachineGroup = require('./specificClass.js');
+'use strict';
+
+const MachineGroup = require('./specificClass');
 const Machine = require('../../rotatingMachine/src/specificClass');
 const Measurement = require('../../measurement/src/specificClass');
-const specs = require('../../generalFunctions/datasets/assetData/curves/hidrostal-H05K-S03R.json');
+const baseCurve = require('../../generalFunctions/datasets/assetData/curves/hidrostal-H05K-S03R.json');
 
-const stateConfig = { time:{starting:0,warmingup:0,stopping:0,coolingdown:0}, movement:{speed:1000,mode:"staticspeed"} };
-const ptConfig = {
-  general:{ logging:{enabled:false,logLevel:"warn"}, name:"testpt", id:"pt-1", unit:"mbar" },
-  functionality:{ softwareType:"measurement", role:"sensor" },
-  asset:{ category:"sensor", type:"pressure", model:"testmodel", supplier:"vega", unit:"mbar" },
-  scaling:{ absMin:0, absMax:4000 }
+const CONTROL_MODES = ['optimalcontrol', 'prioritycontrol', 'prioritypercentagecontrol'];
+const MODE_LABELS = {
+  optimalcontrol: 'OPT',
+  prioritycontrol: 'PRIO',
+  prioritypercentagecontrol: 'PERC'
 };
 
-const testSuite = [];
-const efficiencyComparisons = [];
+const stateConfig = {
+  time: { starting: 0, warmingup: 0, stopping: 0, coolingdown: 0, emergencystop: 0 },
+  movement: { speed: 1200, mode: 'staticspeed', maxSpeed: 1800 }
+};
 
-function logPass(name, details="") {
-  const entry = { name, status:"PASS", details };
-  testSuite.push(entry);
-  console.log(`✅ ${name}${details ? ` — ${details}` : ""}`);
-}
-function logFail(name, error) {
-  const entry = { name, status:"FAIL", details:error?.message || error };
-  testSuite.push(entry);
-  console.error(`❌ ${name} — ${entry.details}`);
-}
-function approxEqual(actual, expected, tolerancePct=1) {
-  const tolerance = (expected * tolerancePct) / 100;
-  return actual >= expected - tolerance && actual <= expected + tolerance;
-}
-async function sleep(ms){ return new Promise(resolve => setTimeout(resolve, ms)); }
+const ptConfig = {
+  general: { logging: { enabled: false, logLevel: 'error' }, name: 'synthetic-pt', id: 'pt-1', unit: 'mbar' },
+  functionality: {
+    softwareType: 'measurement',
+    role: 'sensor',
+    positionVsParent: 'downstream'
+  },
+  asset: { category: 'sensor', type: 'pressure', model: 'synthetic-pt', supplier: 'lab', unit: 'mbar' },
+  scaling: { absMin: 0, absMax: 4000 }
+};
 
-function createMachineConfig(id,label) {
+const scenarios = [
+  {
+    name: 'balanced_pair',
+    description: 'Two identical pumps validate equal-machine behaviour.',
+    machines: [
+      { id: 'eq-1', label: 'equal-A', curveMods: { flowScale: 1, powerScale: 1 } },
+      { id: 'eq-2', label: 'equal-B', curveMods: { flowScale: 1, powerScale: 1 } }
+    ],
+    pressures: [900, 1300, 1700],
+    flowTargetsPercent: [0.1, 0.4, 0.7, 1],
+    flowMatchTolerance: 5,
+    priorityList: ['eq-1', 'eq-2']
+  },
+  {
+    name: 'mixed_trio',
+    description: 'High / mid / low efficiency pumps to stress unequal-machine behaviour.',
+    machines: [
+      { id: 'hi', label: 'high-eff', curveMods: { flowScale: 1.25, powerScale: 0.82, flowTilt: 0.1, powerTilt: -0.05 } },
+      { id: 'mid', label: 'mid-eff', curveMods: { flowScale: 1, powerScale: 1 } },
+      { id: 'low', label: 'low-eff', curveMods: { flowScale: 0.7, powerScale: 1.35, flowTilt: -0.08, powerTilt: 0.15 } }
+    ],
+    pressures: [800, 1200, 1600, 2000],
+    flowTargetsPercent: [0.1, 0.35, 0.7, 1],
+    flowMatchTolerance: 8,
+    priorityList: ['hi', 'mid', 'low']
+  }
+];
+
+function createGroupConfig(name) {
   return {
-    general:{ logging:{enabled:false,logLevel:"warn"}, name:label, id, unit:"m3/h" },
-    functionality:{ softwareType:"machine", role:"rotationaldevicecontroller" },
-    asset:{ category:"pump", type:"centrifugal", model:"hidrostal-h05k-s03r", supplier:"hydrostal", machineCurve:specs },
-    mode:{
-      current:"auto",
-      allowedActions:{
-        auto:["execSequence","execMovement","flowMovement","statusCheck"],
-        virtualControl:["execMovement","statusCheck"],
-        fysicalControl:["statusCheck"]
+    general: { logging: { enabled: false, logLevel: 'error' }, name: `machinegroup-${name}` },
+    functionality: { softwareType: 'machinegroup', role: 'groupcontroller' },
+    scaling: { current: 'normalized' },
+    mode: { current: 'optimalcontrol' }
+  };
+}
+
+function sleep(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function setPressure(pt, value) {
+  const retries = 6;
+  for (let attempt = 0; attempt < retries; attempt += 1) {
+    try {
+      pt.calculateInput(value);
+      return;
+    } catch (error) {
+      const message = error?.message || String(error);
+      if (!message.toLowerCase().includes('coolprop is still warming up')) {
+        throw error;
+      }
+      await sleep(50);
+    }
+  }
+  throw new Error(`Unable to update pressure to ${value} mbar; CoolProp did not initialise in time.`);
+}
+
+function deepClone(obj) {
+  return JSON.parse(JSON.stringify(obj));
+}
+
+function distortSeries(series = [], scale = 1, tilt = 0) {
+  if (!Array.isArray(series) || series.length === 0) {
+    return series;
+  }
+  const lastIndex = series.length - 1;
+  return series.map((value, index) => {
+    const gradient = lastIndex === 0 ? 0 : index / lastIndex - 0.5;
+    const distorted = value * scale * (1 + tilt * gradient);
+    return Number(Math.max(distorted, 0).toFixed(6));
+  });
+}
+
+function createSyntheticCurve(mods = {}) {
+  const { flowScale = 1, powerScale = 1, flowTilt = 0, powerTilt = 0 } = mods;
+  const curve = deepClone(baseCurve);
+  if (curve.nq) {
+    Object.values(curve.nq).forEach(set => {
+      set.y = distortSeries(set.y, flowScale, flowTilt);
+    });
+  }
+  if (curve.np) {
+    Object.values(curve.np).forEach(set => {
+      set.y = distortSeries(set.y, powerScale, powerTilt);
+    });
+  }
+  return curve;
+}
+
+function createMachineConfig(id, label) {
+  return {
+    general: { logging: { enabled: false, logLevel: 'error' }, name: label, id, unit: 'm3/h' },
+    functionality: { softwareType: 'machine', role: 'rotationaldevicecontroller' },
+    asset: { category: 'pump', type: 'centrifugal', model: 'hidrostal-h05k-s03r', supplier: 'hidrostal', machineCurve: baseCurve },
+    mode: {
+      current: 'auto',
+      allowedActions: {
+        auto: ['execsequence', 'execmovement', 'flowmovement', 'statuscheck'],
+        virtualControl: ['execmovement', 'statuscheck'],
+        fysicalControl: ['statuscheck']
       },
-      allowedSources:{
-        auto:["parent","GUI"],
-        virtualControl:["GUI"],
-        fysicalControl:["fysical"]
+      allowedSources: {
+        auto: ['parent', 'GUI'],
+        virtualControl: ['GUI'],
+        fysicalControl: ['fysical']
       }
     },
-    sequences:{
-      startup:["starting","warmingup","operational"],
-      shutdown:["stopping","coolingdown","idle"],
-      emergencystop:["emergencystop","off"],
-      boot:["idle","starting","warmingup","operational"]
+    sequences: {
+      startup: ['starting', 'warmingup', 'operational'],
+      shutdown: ['stopping', 'coolingdown', 'idle'],
+      emergencystop: ['emergencystop', 'off'],
+      boot: ['idle', 'starting', 'warmingup', 'operational']
     }
   };
 }
 
-async function bootstrapGroup() {
-  const groupCfg = {
-    general:{ logging:{enabled:false,logLevel:"warn"}, name:"testmachinegroup" },
-    functionality:{ softwareType:"machinegroup", role:"groupcontroller" },
-    scaling:{ current:"normalized" },
-    mode:{ current:"optimalcontrol" }
-  };
-
-  const mg = new MachineGroup(groupCfg);
+async function bootstrapScenarioMachines(scenario) {
+  const mg = new MachineGroup(createGroupConfig(scenario.name));
   const pt = new Measurement(ptConfig);
 
-  for (let idx=1; idx<=2; idx++){
-    const machine = new Machine(createMachineConfig(String(idx),`machine-${idx}`), stateConfig);
-    mg.childRegistrationUtils.registerChild(machine,"downstream");
-    machine.childRegistrationUtils.registerChild(pt,"downstream");
+  for (const machineDef of scenario.machines) {
+    const machine = new Machine(createMachineConfig(machineDef.id, machineDef.label), stateConfig);
+    if (machineDef.curveMods) {
+      machine.updateCurve(createSyntheticCurve(machineDef.curveMods));
+    }
+    mg.childRegistrationUtils.registerChild(machine, 'downstream');
+    machine.childRegistrationUtils.registerChild(pt, 'downstream');
   }
-  pt.calculateInput(1000);
-  await sleep(10);
+
+  await sleep(25);
   return { mg, pt };
 }
 
-function captureState(mg,label){
-  return {
-    label,
-    machines: Object.entries(mg.machines).map(([id,machine]) => ({
-      id,
-      state: machine.state.getCurrentState(),
-      position: machine.state.getCurrentPosition(),
-      predictedFlow: machine.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0,
-      predictedPower: machine.measurements.type("power").variant("predicted").position("upstream").getCurrentValue() || 0
-    })),
-    totals: {
-      flow: mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0,
-      power: mg.measurements.type("power").variant("predicted").position("upstream").getCurrentValue() || 0,
-      efficiency: mg.measurements.type("efficiency").variant("predicted").position("downstream").getCurrentValue() || 0
-    }
-  };
+function captureTotals(mg) {
+  const flow = mg.measurements.type('flow').variant('predicted').position('atequipment').getCurrentValue() || 0;
+  const power = mg.measurements.type('power').variant('predicted').position('atequipment').getCurrentValue() || 0;
+  const efficiency = mg.measurements.type('efficiency').variant('predicted').position('atequipment').getCurrentValue() || 0;
+  return { flow, power, efficiency };
 }
 
-async function testNormalizedScaling(mg,pt){
-  const label = "Normalized scaling tracks expected flow";
-  try{
-    mg.setScaling("normalized");
-    const dynamic = mg.calcDynamicTotals();
-    const checkpoints = [0,10,25,50,75,100];
-    for (const demand of checkpoints){
-      await mg.handleInput("parent", demand);
-      pt.calculateInput(1400);
-      await sleep(20);
-
-      const totals = mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0;
-      const expected = dynamic.flow.min + (demand/100)*(dynamic.flow.max - dynamic.flow.min);
-      if(!approxEqual(totals, expected, 2)){
-        throw new Error(`Flow ${totals.toFixed(2)} outside expectation ${expected.toFixed(2)} @ ${demand}%`);
-      }
-    }
-    logPass(label);
-  }catch(err){ logFail(label, err); }
+function computeAbsoluteTargets(dynamicTotals, percentages) {
+  const { flow } = dynamicTotals;
+  const min = Number.isFinite(flow.min) ? flow.min : 0;
+  const max = Number.isFinite(flow.max) ? flow.max : 0;
+  const span = Math.max(max - min, 1);
+  return percentages.map(percent => {
+    const pct = Math.max(0, Math.min(1, percent));
+    return min + pct * span;
+  });
 }
 
-async function testAbsoluteScaling(mg,pt){
-  const label = "Absolute scaling accepts direct flow targets";
-  try{
-    mg.setScaling("absolute");
-    mg.setMode("optimalcontrol");
-    const absMin = mg.dynamicTotals.flow.min;
-    const absMax = mg.dynamicTotals.flow.max;
-    const demandPoints = [absMin, absMin+20, (absMin+absMax)/2, absMax-20];
+async function driveModeToFlow({ mg, pt, mode, pressure, targetFlow, priorityOrder }) {
+  await setPressure(pt, pressure);
+  await sleep(15);
 
-    for(const setpoint of demandPoints){
-      await mg.handleInput("parent", setpoint);
-      pt.calculateInput(1400);
-      await sleep(20);
-      const flow = mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0;
-      if(!approxEqual(flow, setpoint, 2)){
-        throw new Error(`Flow ${flow.toFixed(2)} != demand ${setpoint.toFixed(2)}`);
-      }
+  mg.setMode(mode);
+  mg.setScaling('normalized'); // required for prioritypercentagecontrol, works for others too
+
+  const dynamic = mg.calcDynamicTotals();
+  const span = Math.max(dynamic.flow.max - dynamic.flow.min, 1);
+  const normalizedTarget = ((targetFlow - dynamic.flow.min) / span) * 100;
+
+  let low = 0;
+  let high = 100;
+  let demand = Math.max(0, Math.min(100, normalizedTarget || 0));
+  let best = { demand, flow: 0, power: 0, efficiency: 0, error: Infinity };
+
+  for (let attempt = 0; attempt < 4; attempt += 1) {
+    await mg.handleInput('parent', demand, Infinity, priorityOrder);
+    await sleep(30);
+
+    const totals = captureTotals(mg);
+    const error = Math.abs(totals.flow - targetFlow);
+    if (error < best.error) {
+      best = {
+        demand,
+        flow: totals.flow,
+        power: totals.power,
+        efficiency: totals.efficiency,
+        error
+      };
     }
-    logPass(label);
-  }catch(err){ logFail(label, err); }
+
+    if (totals.flow > targetFlow) {
+      high = demand;
+    } else {
+      low = demand;
+    }
+    demand = (low + high) / 2;
+  }
+
+  return best;
 }
 
-async function testModeTransitions(mg,pt){
-  const label = "Mode transitions keep machines responsive";
-  try{
-    const modes = ["optimalcontrol","prioritycontrol","prioritypercentagecontrol"];
-    mg.setScaling("normalized");
-    for(const mode of modes){
-      mg.setMode(mode);
-      await mg.handleInput("parent", 50);
-      pt.calculateInput(1300);
-      await sleep(20);
-      const snapshot = captureState(mg, mode);
-      const active = snapshot.machines.filter(m => m.state !== "idle");
-      if(active.length === 0){
-        throw new Error(`No active machines after switching to ${mode}`);
-      }
-    }
-    logPass(label);
-  }catch(err){ logFail(label, err); }
+function formatEfficiencyRows(rows) {
+  return rows.map(row => {
+    const optimal = row.modes.optimalcontrol;
+    const priority = row.modes.prioritycontrol;
+    const percentage = row.modes.prioritypercentagecontrol;
+    return {
+      pressure: row.pressure,
+      targetFlow: Number(row.targetFlow.toFixed(1)),
+      [`${MODE_LABELS.optimalcontrol}_Flow`]: Number(optimal.flow.toFixed(1)),
+      [`${MODE_LABELS.optimalcontrol}_Eff`]: Number(optimal.efficiency.toFixed(3)),
+      [`${MODE_LABELS.prioritycontrol}_Flow`]: Number(priority.flow.toFixed(1)),
+      [`${MODE_LABELS.prioritycontrol}_Eff`]: Number(priority.efficiency.toFixed(3)),
+      [`Δ${MODE_LABELS.prioritycontrol}-OPT_Eff`]: Number(
+        (priority.efficiency - optimal.efficiency).toFixed(3)
+      ),
+      [`${MODE_LABELS.prioritypercentagecontrol}_Flow`]: Number(percentage.flow.toFixed(1)),
+      [`${MODE_LABELS.prioritypercentagecontrol}_Eff`]: Number(percentage.efficiency.toFixed(3)),
+      [`Δ${MODE_LABELS.prioritypercentagecontrol}-OPT_Eff`]: Number(
+        (percentage.efficiency - optimal.efficiency).toFixed(3)
+      )
+    };
+  });
 }
 
-async function testRampBehaviour(mg,pt){
-  const label = "Ramp up/down keeps monotonic flow";
-  try{
-    mg.setMode("optimalcontrol");
-    mg.setScaling("normalized");
-    const upDemands = [0,20,40,60,80,100];
-    let lastFlow = 0;
-    for(const demand of upDemands){
-      await mg.handleInput("parent", demand);
-      pt.calculateInput(1500);
-      await sleep(15);
-      const flow = mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0;
-      if(flow < lastFlow - 1){
-        throw new Error(`Flow decreased during ramp up: ${flow.toFixed(2)} < ${lastFlow.toFixed(2)}`);
-      }
-      lastFlow = flow;
-    }
-    const downDemands = [100,80,60,40,20,0];
-    lastFlow = Infinity;
-    for(const demand of downDemands){
-      await mg.handleInput("parent", demand);
-      pt.calculateInput(1200);
-      await sleep(15);
-      const flow = mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0;
-      if(flow > lastFlow + 1){
-        throw new Error(`Flow increased during ramp down: ${flow.toFixed(2)} > ${lastFlow.toFixed(2)}`);
-      }
-      lastFlow = flow;
-    }
-    logPass(label);
-  }catch(err){ logFail(label, err); }
-}
-
-async function testPressureAdaptation(mg,pt){
-  const label = "Pressure changes update predictions";
-  try{
-    mg.setMode("optimalcontrol");
-    mg.setScaling("normalized");
-    const pressures = [800,1200,1600,2000];
-    let previousFlow = null;
-    for(const p of pressures){
-      pt.calculateInput(p);
-      await mg.handleInput("parent", 50);
-      await sleep(20);
-      const flow = mg.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue() || 0;
-      if(previousFlow !== null && Math.abs(flow - previousFlow) < 0.5){
-        throw new Error(`Flow did not react to pressure shift (${previousFlow.toFixed(2)} -> ${flow.toFixed(2)})`);
-      }
-      previousFlow = flow;
-    }
-    logPass(label);
-  }catch(err){ logFail(label, err); }
-}
-
-
-async function comparePriorityVsOptimal(mg, pt){
-  const label = "Priority vs Optimal efficiency comparison";
-  try{
-    mg.setScaling("normalized");
-    const pressures = [800, 1100, 1400, 1700];
-    const demands = [...Array(21)].map((_, idx) => idx * 5);
-
-    for (const pressure of pressures) {
-      pt.calculateInput(pressure);
-      await sleep(15);
-
-      for (const demand of demands) {
-        mg.setMode("optimalcontrol");
-        await mg.handleInput("parent", demand);
-        pt.calculateInput(pressure);
-        await sleep(20);
-        const optimalTotals = captureState(mg, `optimal-${pressure}-${demand}`).totals;
-
-        mg.setMode("prioritycontrol");
-        await mg.handleInput("parent", demand);
-        pt.calculateInput(pressure);
-        await sleep(20);
-        const priorityTotals = captureState(mg, `priority-${pressure}-${demand}`).totals;
-
-        efficiencyComparisons.push({
-          pressure,
-          demandPercent: demand,
-          optimalFlow: Number(optimalTotals.flow.toFixed(3)),
-          optimalPower: Number(optimalTotals.power.toFixed(3)),
-          optimalEfficiency: Number((optimalTotals.efficiency || 0).toFixed(4)),
-          priorityFlow: Number(priorityTotals.flow.toFixed(3)),
-          priorityPower: Number(priorityTotals.power.toFixed(3)),
-          priorityEfficiency: Number((priorityTotals.efficiency || 0).toFixed(4)),
-          efficiencyDelta: Number(((priorityTotals.efficiency || 0) - (optimalTotals.efficiency || 0)).toFixed(4)),
-          powerDelta: Number((priorityTotals.power - optimalTotals.power).toFixed(3))
+function summarizeEfficiency(rows) {
+  const map = new Map();
+  rows.forEach(row => {
+    CONTROL_MODES.forEach(mode => {
+      const key = `${row.scenario}-${mode}`;
+      if (!map.has(key)) {
+        map.set(key, {
+          scenario: row.scenario,
+          mode,
+          samples: 0,
+          avgFlowDiff: 0,
+          avgEfficiency: 0
         });
       }
-    }
-
-    logPass(label, "efficiencyComparisons array populated");
-  } catch (err) {
-    logFail(label, err);
-  }
+      const bucket = map.get(key);
+      const stats = row.modes[mode];
+      bucket.samples += 1;
+      bucket.avgFlowDiff += Math.abs(stats.flow - row.targetFlow);
+      bucket.avgEfficiency += stats.efficiency || 0;
+    });
+  });
+  return Array.from(map.values()).map(item => ({
+    scenario: item.scenario,
+    mode: item.mode,
+    samples: item.samples,
+    avgFlowDiff: Number((item.avgFlowDiff / item.samples).toFixed(2)),
+    avgEfficiency: Number((item.avgEfficiency / item.samples).toFixed(3))
+  }));
 }
 
+async function evaluateScenario(scenario) {
+  console.log(`\nRunning scenario "${scenario.name}": ${scenario.description}`);
+  const { mg, pt } = await bootstrapScenarioMachines(scenario);
+  const priorityOrder =
+    scenario.priorityList && scenario.priorityList.length
+      ? scenario.priorityList
+      : scenario.machines.map(machine => machine.id);
 
-async function run(){
-  console.log("🚀 Starting machine-group integration tests...");
-  const { mg, pt } = await bootstrapGroup();
+  const rows = [];
 
-  await testNormalizedScaling(mg, pt);
-  await testAbsoluteScaling(mg, pt);
-  await testModeTransitions(mg, pt);
-  await testRampBehaviour(mg, pt);
-  await testPressureAdaptation(mg, pt);
-  await comparePriorityVsOptimal(mg, pt);
+  for (const pressure of scenario.pressures) {
+    await setPressure(pt, pressure);
+    await sleep(20);
 
-  console.log("\n📋 TEST SUMMARY");
-  console.table(testSuite);
-  console.log("\n📊 efficiencyComparisons:");
-  console.dir(efficiencyComparisons, { depth:null });
-    console.log("✅ All tests completed.");
+    const dynamicTotals = mg.calcDynamicTotals();
+    const targets = computeAbsoluteTargets(dynamicTotals, scenario.flowTargetsPercent || [0, 0.5, 1]);
+
+    for (let idx = 0; idx < targets.length; idx += 1) {
+      const targetFlow = targets[idx];
+      const row = {
+        scenario: scenario.name,
+        pressure,
+        targetFlow,
+        modes: {}
+      };
+
+      for (const mode of CONTROL_MODES) {
+        const stats = await driveModeToFlow({
+          mg,
+          pt,
+          mode,
+          pressure,
+          targetFlow,
+          priorityOrder
+        });
+        row.modes[mode] = stats;
+      }
+
+      rows.push(row);
+    }
+  }
+
+  console.log(`Efficiency comparison table for scenario "${scenario.name}":`);
+  console.table(formatEfficiencyRows(rows));
+
+  return { rows };
+}
+
+async function run() {
+  const combinedRows = [];
+
+  for (const scenario of scenarios) {
+    const { rows } = await evaluateScenario(scenario);
+    combinedRows.push(...rows);
+  }
+
+  console.log('\nEfficiency summary by scenario and control mode:');
+  console.table(summarizeEfficiency(combinedRows));
+
+  console.log('\nAll machine group control tests completed successfully.');
 }
 
 run().catch(err => {
-  console.error("💥 Test harness crashed:", err);
+  console.error('Machine group control test harness crashed:', err);
+  process.exitCode = 1;
 });
-// ...existing code...
-
-// Run all tests
-run();
\ No newline at end of file
diff --git a/src/nodeClass.js b/src/nodeClass.js
index 37f1cdd..7706508 100644
--- a/src/nodeClass.js
+++ b/src/nodeClass.js
@@ -67,8 +67,8 @@ class nodeClass {
     const totalFlow = mg.measurements
       ?.type("flow")
       ?.variant("predicted")
-      ?.position("downstream")
-      ?.getCurrentValue() || 0;
+      ?.position("atequipment")
+      ?.getCurrentValue('m3/h') || 0;
       
     const totalPower = mg.measurements
       ?.type("power")
@@ -181,8 +181,8 @@ class nodeClass {
    */
   _tick() {
     const raw = this.source.getOutput();
-    const processMsg = this._output.formatMsg(raw, this.config, "process");
-    const influxMsg = this._output.formatMsg(raw, this.config, "influxdb");
+    const processMsg = this._output.formatMsg(raw, this.source.config, "process");
+    const influxMsg = this._output.formatMsg(raw, this.source.config, "influxdb");
 
     // Send only updated outputs on ports 0 & 1
     this.node.send([processMsg, influxMsg]);
@@ -199,16 +199,16 @@ class nodeClass {
             const RED = this.RED;
           switch (msg.topic) {
             case "registerChild":
-                    console.log(`Registering child in mgc: ${msg.payload}`);
+                    //console.log(`Registering child in mgc: ${msg.payload}`);
                     const childId = msg.payload;
                     const childObj = RED.nodes.getNode(childId);
                     
                     // Debug: Check what we're getting
-                    console.log(`Child object:`, childObj ? 'found' : 'NOT FOUND');
-                    console.log(`Child source:`, childObj?.source ? 'exists' : 'MISSING');
+                    //console.log(`Child object:`, childObj ? 'found' : 'NOT FOUND');
+                    //console.log(`Child source:`, childObj?.source ? 'exists' : 'MISSING');
                     if (childObj?.source) {
-                      console.log(`Child source type:`, childObj.source.constructor.name);
-                      console.log(`Child has state:`, !!childObj.source.state);
+                      //console.log(`Child source type:`, childObj.source.constructor.name);
+                      //console.log(`Child has state:`, !!childObj.source.state);
                     }
                     
                     mg.childRegistrationUtils.registerChild(
@@ -217,7 +217,7 @@ class nodeClass {
                     );
                     
                     // Debug: Check machines after registration
-                    console.log(`Total machines after registration:`, Object.keys(mg.machines || {}).length);
+                    //console.log(`Total machines after registration:`, Object.keys(mg.machines || {}).length);
                     break;
 
             case "setMode":
diff --git a/src/specificClass.js b/src/specificClass.js
index 82f4d08..f8ae8d1 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -15,7 +15,17 @@ class MachineGroup {
         this.logger = new logger(this.config.general.logging.enabled,this.config.general.logging.logLevel, this.config.general.name);
         
         // Initialize measurements
-        this.measurements = new MeasurementContainer();
+        this.measurements = new MeasurementContainer({
+        autoConvert: true,
+        windowSize: 50,
+        defaultUnits: {
+            pressure: 'mbar',
+            flow: 'l/s',
+            power: 'kW',
+            temperature: 'C'
+        }
+        });
+
         this.interpolation = new interpolation();
 
         // Machines and child data
@@ -39,6 +49,8 @@ class MachineGroup {
 
     registerChild(child,softwareType) {
         this.logger.debug('Setting up childs specific for this class');
+
+        const position = child.config.general.positionVsParent;
         
        if(softwareType == "machine"){
            // Check if the machine is already registered
@@ -133,15 +145,23 @@ class MachineGroup {
         this.logger.debug(`\n --------- Calculating dynamic totals for ${Object.keys(this.machines).length} machines. @ current pressure settings : ----------`);
         
         Object.values(this.machines).forEach(machine => {
+            //skip machines without valid curve
+            if(!machine.hasCurve){
+                this.logger.error(`Machine ${machine.config.general.id} does not have a valid curve. Skipping in dynamic totals calculation.`);
+                return;
+            }
+
             this.logger.debug(`Processing machine with id: ${machine.config.general.id}`);
             this.logger.debug(`Current pressure settings: ${JSON.stringify(machine.predictFlow.currentF)}`);
+
             //fetch min flow ever seen over all machines
             const minFlow = machine.predictFlow.currentFxyYMin; 
             const maxFlow = machine.predictFlow.currentFxyYMax;
             const minPower = machine.predictPower.currentFxyYMin;
             const maxPower = machine.predictPower.currentFxyYMax;
-            const actFlow = machine.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue();
-            const actPower = machine.measurements.type("power").variant("predicted").position("atEquipment").getCurrentValue();
+
+            const actFlow = machine.measurements.type("flow").variant("predicted").position("atequipment").getCurrentValue();
+            const actPower = machine.measurements.type("power").variant("predicted").position("atequipment").getCurrentValue();
 
             this.logger.debug(`Machine ${machine.config.general.id} - Min Flow: ${minFlow}, Max Flow: ${maxFlow}, Min Power: ${minPower}, Max Power: ${maxPower}, NCog: ${machine.NCog}`);
 
@@ -192,14 +212,14 @@ class MachineGroup {
     handlePressureChange() {
         this.logger.info("---------------------->>>>>>>>>>>>>>>>>>>>>>>>>>>Pressure change detected.");
         // Recalculate totals
-         const { flow, power } = this.calcDynamicTotals();
+        const { flow, power } = this.calcDynamicTotals();
 
         this.logger.debug(`Dynamic Totals after pressure change - Flow: Min ${flow.min}, Max ${flow.max}, Act ${flow.act} | Power: Min ${power.min}, Max ${power.max}, Act ${power.act}`);
-        this.measurements.type("flow").variant("predicted").position("downstream").value(flow.act);
-        this.measurements.type("power").variant("predicted").position("atEquipment").value(power.act);
+        this.measurements.type("flow").variant("predicted").position("atequipment").value(flow.act);
+        this.measurements.type("power").variant("predicted").position("atequipment").value(power.act);
 
         const { maxEfficiency, lowestEfficiency } = this.calcGroupEfficiency(this.machines);
-        const efficiency = this.measurements.type("efficiency").variant("predicted").position("atEquipment").getCurrentValue();
+        const efficiency = this.measurements.type("efficiency").variant("predicted").position("atequipment").getCurrentValue();
         this.calcDistanceBEP(efficiency,maxEfficiency,lowestEfficiency);
     }
 
@@ -238,8 +258,8 @@ class MachineGroup {
                 if(machine.measurements.type("flow").variant("measured").position("downstream").getCurrentValue()){
                     flow = machine.measurements.type("flow").variant("measured").position("downstream").getCurrentValue();
                 } 
-                else if(machine.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue()){
-                    flow = machine.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue();
+                else if(machine.measurements.type("flow").variant("predicted").position("atequipment").getCurrentValue()){
+                    flow = machine.measurements.type("flow").variant("predicted").position("atequipment").getCurrentValue();
                 }
                 else{
                     this.logger.error("Dont perform calculation at all seeing that there is a machine working but we dont know the flow its producing");
@@ -264,7 +284,7 @@ class MachineGroup {
         Object.keys(machines).forEach(machineId => {
             
             const state = machines[machineId].state.getCurrentState();
-            const validActionForMode = machines[machineId].isValidActionForMode("execSequence", "auto");
+            const validActionForMode = machines[machineId].isValidActionForMode("execsequence", "auto");
             
 
             // Reasons why a machine is not valid for the combination
@@ -313,42 +333,71 @@ class MachineGroup {
 
     calcBestCombination(combinations, Qd) {
         let bestCombination = null;
-
-        //keep track of totals
         let bestPower = Infinity;
         let bestFlow = 0;
         let bestCog = 0;
-        
-        combinations.forEach(combination => {
 
-            let flowDistribution = []; // Stores the flow distribution for the best combination
+        combinations.forEach(combination => {
+            let flowDistribution = [];
             let totalCoG = 0;
             let totalPower = 0;
-            let totalFlow = 0;
 
-            // Calculate the total CoG for the current combination
-            combination.forEach(machineId => { totalCoG += ( Math.round(this.machines[machineId].NCog * 100 ) /100 ) ; });
-
-            // Calculate the total power for the current combination
+            // Sum normalized CoG for the combination
             combination.forEach(machineId => {
-                let flow = 0;
-                
-                // Prevent division by zero
-                if (totalCoG === 0) {
-                    // Distribute flow equally among all pumps
-                    flow = Qd / combination.length;
-
-                } else {
-                    // Normal CoG-based distribution
-                    flow = (this.machines[machineId].NCog / totalCoG) * Qd ;
-                    this.logger.debug(`Machine Normalized CoG-based distribution ${machineId} flow: ${flow}`);
-                }
-                totalFlow += flow;
-                totalPower += this.machines[machineId].inputFlowCalcPower(flow);
-                flowDistribution.push({ machineId: machineId,flow: flow });
+                totalCoG += Math.round((this.machines[machineId].NCog || 0) * 100) / 100;
+            });
+
+            // Initial CoG-based distribution
+            combination.forEach(machineId => {
+                let flow = 0;
+
+                if (totalCoG === 0) {
+                    flow = Qd / combination.length;
+                } else {
+                    flow = ((this.machines[machineId].NCog || 0) / totalCoG) * Qd;
+                    this.logger.debug(`Machine Normalized CoG-based distribution ${machineId} flow: ${flow}`);
+                }
+
+                flowDistribution.push({ machineId, flow });
+            });
+
+            // Clamp to min/max and spill leftover once
+            const clamped = flowDistribution.map(entry => {
+                const machine = this.machines[entry.machineId];
+                const min = machine.predictFlow.currentFxyYMin;
+                const max = machine.predictFlow.currentFxyYMax;
+                const clampedFlow = Math.min(max, Math.max(min, entry.flow));
+                return { ...entry, flow: clampedFlow, min, max, desired: entry.flow };
+            });
+
+            let remainder = Qd - clamped.reduce((sum, entry) => sum + entry.flow, 0);
+
+            if (Math.abs(remainder) > 1e-6) {
+                const adjustable = clamped.filter(entry =>
+                    remainder > 0 ? entry.flow < entry.max : entry.flow > entry.min
+                );
+                const weightSum = adjustable.reduce((sum, entry) => sum + entry.desired, 0) || adjustable.length;
+
+                adjustable.forEach(entry => {
+                    const weight = entry.desired / weightSum || 1 / adjustable.length;
+                    const delta = remainder * weight;
+                    const next = remainder > 0
+                        ? Math.min(entry.max, entry.flow + delta)
+                        : Math.max(entry.min, entry.flow + delta);
+
+                    remainder -= (next - entry.flow);
+                    entry.flow = next;
+                });
+            }
+
+            flowDistribution = clamped;
+
+            let totalFlow = 0;
+            flowDistribution.forEach(({ machineId, flow }) => {
+                totalFlow += flow;
+                totalPower += this.machines[machineId].inputFlowCalcPower(flow);
             });
 
-            // Update the best combination if the current one is better
             if (totalPower < bestPower) {
                 this.logger.debug(`New best combination found: ${totalPower} < ${bestPower}`);
                 this.logger.debug(`combination ${JSON.stringify(flowDistribution)}`);
@@ -362,6 +411,177 @@ class MachineGroup {
         return { bestCombination, bestPower, bestFlow, bestCog };
     }
 
+    
+    // Estimate the local dP/dQ slopes around the BEP for the provided machine.
+    estimateSlopesAtBEP(machine, Q_BEP, delta = 1.0) {
+        const fallback = {
+            slopeLeft: 0,
+            slopeRight: 0,
+            alpha: 1,
+            Q_BEP: Q_BEP || 0,
+            P_BEP: 0
+        };
+
+        const minFlow = machine.predictFlow.currentFxyYMin;
+        const maxFlow = machine.predictFlow.currentFxyYMax;
+        const span = Math.max(0, maxFlow - minFlow);
+        const normalizedCog = Math.max(0, Math.min(1, machine.NCog || 0));
+        const targetBEP = Q_BEP ?? (minFlow + span * normalizedCog);
+        const clampFlow = (flow) => Math.min(maxFlow, Math.max(minFlow, flow)); // ensure within bounds using small helper function
+        const center = clampFlow(targetBEP);
+        const deltaSafe = Math.max(delta, 0.01);
+        const leftFlow = clampFlow(center - deltaSafe);
+        const rightFlow = clampFlow(center + deltaSafe);
+        const powerAt = (flow) => machine.inputFlowCalcPower(flow);  // helper to get power at a given flow
+        const P_center = powerAt(center);
+        const P_left = powerAt(leftFlow);
+        const P_right = powerAt(rightFlow);
+        const slopeLeft = (P_center - P_left) / Math.max(1e-6, center - leftFlow);
+        const slopeRight = (P_right - P_center) / Math.max(1e-6, rightFlow - center);
+        const alpha = Math.max(1e-6, (Math.abs(slopeLeft) + Math.abs(slopeRight)) / 2);
+
+        return {
+            slopeLeft,
+            slopeRight,
+            alpha,
+            Q_BEP: center,
+            P_BEP: P_center
+        };
+
+    }
+
+     //Redistribute remaining demand using slope-based weights so flatter curves attract more flow.
+    redistributeFlowBySlope(pumpInfos, flowDistribution, delta, directional = true) {
+        const tolerance = 1e-3; // Small tolerance to avoid infinite loops
+        let remaining = delta; // Remaining flow to distribute
+        const entryMap = new Map(flowDistribution.map(entry => [entry.machineId, entry])); // Map for quick access
+
+        // Loop until remaining flow is within tolerance
+        while (Math.abs(remaining) > tolerance) {
+            const increasing = remaining > 0; // Determine if we are increasing or decreasing flow
+            // Build candidates with capacity and weight
+            const candidates = pumpInfos.map(info => {
+                const entry = entryMap.get(info.id);
+                if (!entry) { return null; }
+                const capacity = increasing ? info.maxFlow - entry.flow : entry.flow - info.minFlow; // Calculate available capacity based on direction
+                if (capacity <= tolerance) { return null; }
+
+                const slope = increasing
+                    ? (directional ? info.slopes.slopeRight : info.slopes.alpha)
+                    : (directional ? info.slopes.slopeLeft : info.slopes.alpha);
+
+                const weight = 1 / Math.max(1e-6, Math.abs(slope) || info.slopes.alpha || 1);
+                return { entry, capacity, weight };
+            }).filter(Boolean);
+
+            if (!candidates.length) { break; } // No candidates available, exit loop
+
+            const weightSum = candidates.reduce((sum, candidate) => sum + candidate.weight * candidate.capacity, 0); // weighted sum of capacities
+            if (weightSum <= 0) { break; } // Avoid division by zero
+
+            let progress = 0;
+            // Distribute remaining flow among candidates based on their weights and capacities
+            candidates.forEach(candidate => {
+                let share = (candidate.weight * candidate.capacity / weightSum) * Math.abs(remaining);
+                share = Math.min(share, candidate.capacity); // Ensure we don't exceed capacity
+                if (share <= 0) { return; } // Skip if no share to allocate
+                if (increasing) {
+                    candidate.entry.flow += share;
+                } else {
+                    candidate.entry.flow -= share;
+                }
+                progress += share; // Track total progress made in this iteration
+            });
+
+            if (progress <= tolerance) { break; }
+            remaining += increasing ? -progress : progress; // Update remaining flow to distribute
+        }
+    }
+
+    // BEP-gravitation based combination finder that biases allocation around each pump's BEP.
+    calcBestCombinationBEPGravitation(combinations, Qd, method = "BEP-Gravitation-Directional") {
+        let bestCombination = null;
+        let bestPower = Infinity;
+        let bestFlow = 0;
+        let bestCog = 0;
+        let bestDeviation = Infinity;
+        const directional = method === "BEP-Gravitation-Directional";
+
+        combinations.forEach(combination => {
+            const pumpInfos = combination.map(machineId => {
+                const machine = this.machines[machineId];
+                const minFlow = machine.predictFlow.currentFxyYMin;
+                const maxFlow = machine.predictFlow.currentFxyYMax;
+                const span = Math.max(0, maxFlow - minFlow);
+                const NCog = Math.max(0, Math.min(1, machine.NCog || 0));
+                const estimatedBEP = minFlow + span * NCog;  // Estimated BEP flow based on current curve
+                const slopes = this.estimateSlopesAtBEP(machine, estimatedBEP);
+                return {
+                    id: machineId,
+                    machine,
+                    minFlow,
+                    maxFlow,
+                    NCog,
+                    Q_BEP: slopes.Q_BEP,
+                    slopes
+                };
+            });
+
+            // Skip if no pumps in combination
+            if (pumpInfos.length === 0) { return; }
+
+            // Start at BEP flows
+            const flowDistribution = pumpInfos.map(info => ({
+                machineId: info.id,
+                flow: Math.min(info.maxFlow, Math.max(info.minFlow, info.Q_BEP))
+            })); 
+
+            let totalFlow = flowDistribution.reduce((sum, entry) => sum + entry.flow, 0); // Initial total flow
+            const delta = Qd - totalFlow; // Difference to target demand
+            if (Math.abs(delta) > 1e-6) {
+                this.redistributeFlowBySlope(pumpInfos, flowDistribution, delta, directional);
+            }
+
+            let totalPower = 0;
+            totalFlow = 0;
+            flowDistribution.forEach(entry => {
+                const info = pumpInfos.find(info => info.id === entry.machineId);
+                const flow = Math.min(info.maxFlow, Math.max(info.minFlow, entry.flow));
+                entry.flow = flow;
+                totalFlow += flow;
+                totalPower += info.machine.inputFlowCalcPower(flow);
+            });
+
+            const totalCog = pumpInfos.reduce((sum, info) => sum + info.NCog, 0);
+            const deviation = pumpInfos.reduce((sum, info) => {
+                const entry = flowDistribution.find(item => item.machineId === info.id);
+                const deltaFlow = entry ? (entry.flow - info.Q_BEP) : 0;
+                return sum + (deltaFlow * deltaFlow) * (info.slopes.alpha || 1);
+            }, 0);
+
+            const shouldUpdate = totalPower < bestPower ||
+                (totalPower === bestPower && deviation < bestDeviation);
+
+            if (shouldUpdate) {
+                bestCombination = flowDistribution.map(entry => ({ ...entry }));
+                bestPower = totalPower;
+                bestFlow = totalFlow;
+                bestCog = totalCog;
+                bestDeviation = deviation;
+            }
+        });
+
+        return {
+            bestCombination,
+            bestPower,
+            bestFlow,
+            bestCog,
+            bestDeviation,
+            method
+        };
+    }
+
+
     // -------- Mode and Input Management -------- //
     isValidActionForMode(action, mode) {
         const allowedActionsSet = this.config.mode.allowedActions[mode] || [];
@@ -440,7 +660,26 @@ class MachineGroup {
 
             // fetch all valid combinations that meet expectations
             const combinations = this.validPumpCombinations(this.machines, Qd, powerCap); 
-            const bestResult = this.calcBestCombination(combinations, Qd);
+
+            if (!combinations || combinations.length === 0) {
+                this.logger.warn(`Demand: ${Qd.toFixed(2)} -> No valid combination found (empty set).`);
+                return;
+            }
+
+            // Decide which optimization routine we run. Defaults to BEP-based gravitation with directionality.
+            const optimizationMethod = this.config.optimization?.method || "BEP-Gravitation-Directional";
+            let bestResult;
+            if (optimizationMethod === "NCog") {
+                bestResult = this.calcBestCombination(combinations, Qd);
+            } else if (
+                optimizationMethod === "BEP-Gravitation" ||
+                optimizationMethod === "BEP-Gravitation-Directional"
+            ) {
+                bestResult = this.calcBestCombinationBEPGravitation(combinations, Qd, optimizationMethod);
+            } else {
+                this.logger.warn(`Unknown optimization method '${optimizationMethod}', falling back to BEP-Gravitation-Directional.`);
+                bestResult = this.calcBestCombinationBEPGravitation(combinations, Qd, "BEP-Gravitation-Directional");
+            }
 
             if(bestResult.bestCombination === null){
                 this.logger.warn(`Demand: ${Qd.toFixed(2)} -> No valid combination found => not updating control `);
@@ -451,10 +690,10 @@ class MachineGroup {
             this.logger.debug(`Moving to demand: ${Qd.toFixed(2)} -> Pumps: [${debugInfo}] => Total Power: ${bestResult.bestPower.toFixed(2)}`);
             
             //store the total delivered power
-            this.measurements.type("power").variant("predicted").position("atEquipment").value(bestResult.bestPower);
-            this.measurements.type("flow").variant("predicted").position("downstream").value(bestResult.bestFlow);
-            this.measurements.type("efficiency").variant("predicted").position("atEquipment").value(bestResult.bestFlow / bestResult.bestPower);
-            this.measurements.type("Ncog").variant("predicted").position("atEquipment").value(bestResult.bestCog);
+            this.measurements.type("power").variant("predicted").position("atequipment").value(bestResult.bestPower);
+            this.measurements.type("flow").variant("predicted").position("atequipment").value(bestResult.bestFlow);
+            this.measurements.type("efficiency").variant("predicted").position("atequipment").value(bestResult.bestFlow / bestResult.bestPower);
+            this.measurements.type("Ncog").variant("predicted").position("atequipment").value(bestResult.bestCog);
 
             await Promise.all(Object.entries(this.machines).map(async ([machineId, machine]) => {
                 // Find the flow for this machine in the best combination
@@ -469,16 +708,16 @@ class MachineGroup {
                     }
 
                     if( (flow <= 0 ) && ( machineStates[machineId] === "operational" || machineStates[machineId] === "accelerating" || machineStates[machineId] === "decelerating" ) ){
-                        await machine.handleInput("parent", "execSequence", "shutdown");
+                        await machine.handleInput("parent", "execsequence", "shutdown");
                     }
 
                     if(machineStates[machineId] === "idle" && flow > 0){
-                        await machine.handleInput("parent", "execSequence", "startup");
-                        await machine.handleInput("parent", "flowMovement", flow);
+                        await machine.handleInput("parent", "execsequence", "startup");
+                        await machine.handleInput("parent", "flowmovement", flow);
                     }
 
                     if(machineStates[machineId] === "operational" && flow > 0 ){
-                        await machine.handleInput("parent", "flowMovement", flow);
+                        await machine.handleInput("parent", "flowmovement", flow);
                     }
             }));
         }
@@ -551,7 +790,7 @@ class MachineGroup {
     filterOutUnavailableMachines(list) {
         const newList = list.filter(({ id, machine }) => {
             const state = machine.state.getCurrentState();
-            const validActionForMode = machine.isValidActionForMode("execSequence", "auto");
+            const validActionForMode = machine.isValidActionForMode("execsequence", "auto");
             
             return !(state === "off" || state === "coolingdown" || state === "stopping" || state === "emergencystop" || !validActionForMode); 
         });
@@ -681,10 +920,10 @@ class MachineGroup {
             this.logger.debug(`Priority control for demand: ${totalFlow.toFixed(2)} -> Active pumps: [${debugInfo}] => Total Power: ${totalPower.toFixed(2)}`);
             
             // Store measurements
-            this.measurements.type("power").variant("predicted").position("atEquipment").value(totalPower);
-            this.measurements.type("flow").variant("predicted").position("downstream").value(totalFlow);
-            this.measurements.type("efficiency").variant("predicted").position("atEquipment").value(totalFlow / totalPower);
-            this.measurements.type("Ncog").variant("predicted").position("atEquipment").value(totalCog);
+            this.measurements.type("power").variant("predicted").position("atequipment").value(totalPower);
+            this.measurements.type("flow").variant("predicted").position("atequipment").value(totalFlow);
+            this.measurements.type("efficiency").variant("predicted").position("atequipment").value(totalFlow / totalPower);
+            this.measurements.type("Ncog").variant("predicted").position("atequipment").value(totalCog);
 
             this.logger.debug(`Flow distribution: ${JSON.stringify(flowDistribution)}`);
             // Apply the flow distribution to machines
@@ -694,13 +933,13 @@ class MachineGroup {
                 const currentState = this.machines[machineId].state.getCurrentState();
 
                 if (flow <= 0 && (currentState === "operational" || currentState === "accelerating" || currentState === "decelerating")) {
-                    await machine.handleInput("parent", "execSequence", "shutdown");
+                    await machine.handleInput("parent", "execsequence", "shutdown");
                 }
                 else if (currentState === "idle" && flow > 0) {
-                    await machine.handleInput("parent", "execSequence", "startup");
+                    await machine.handleInput("parent", "execsequence", "startup");
                 }
                 else if (currentState === "operational" && flow > 0) {
-                    await machine.handleInput("parent", "flowMovement", flow);
+                    await machine.handleInput("parent", "flowmovement", flow);
                 }
             }));
         }
@@ -716,7 +955,7 @@ class MachineGroup {
             if(input < 0 ){
                 //turn all machines off
                 await Promise.all(Object.entries(this.machines).map(async ([machineId, machine]) => {
-                    if (this.isMachineActive(machineId)) { await machine.handleInput("parent", "execSequence", "shutdown"); }
+                    if (this.isMachineActive(machineId)) { await machine.handleInput("parent", "execsequence", "shutdown"); }
                 }));
                 return;
             }
@@ -780,13 +1019,13 @@ class MachineGroup {
                 const currentState = this.machines[machineId].state.getCurrentState();
 
                 if (ctrl < 0 && (currentState === "operational" || currentState === "accelerating" || currentState === "decelerating")) {
-                    await machine.handleInput("parent", "execSequence", "shutdown");
+                    await machine.handleInput("parent", "execsequence", "shutdown");
                 }
                 else if (currentState === "idle" && ctrl >= 0) {
-                    await machine.handleInput("parent", "execSequence", "startup");
+                    await machine.handleInput("parent", "execsequence", "startup");
                 }
                 else if (currentState === "operational" && ctrl > 0) {
-                    await machine.handleInput("parent", "execMovement", ctrl);
+                    await machine.handleInput("parent", "execmovement", ctrl);
                 }
             }));
 
@@ -796,8 +1035,8 @@ class MachineGroup {
             // fetch and store measurements
             Object.entries(this.machines).forEach(([machineId, machine]) => {
 
-                const powerValue = machine.measurements.type("power").variant("predicted").position("atEquipment").getCurrentValue();
-                const flowValue = machine.measurements.type("flow").variant("predicted").position("downstream").getCurrentValue();
+                const powerValue = machine.measurements.type("power").variant("predicted").position("atequipment").getCurrentValue();
+                const flowValue = machine.measurements.type("flow").variant("predicted").position("atequipment").getCurrentValue();
 
                 if (powerValue !== null) {
                     totalPower.push(powerValue);
@@ -807,11 +1046,11 @@ class MachineGroup {
                 }
             });
 
-            this.measurements.type("power").variant("predicted").position("atEquipment").value(totalPower.reduce((a, b) => a + b, 0));
-            this.measurements.type("flow").variant("predicted").position("downstream").value(totalFlow.reduce((a, b) => a + b, 0));
+            this.measurements.type("power").variant("predicted").position("atequipment").value(totalPower.reduce((a, b) => a + b, 0));
+            this.measurements.type("flow").variant("predicted").position("atequipment").value(totalFlow.reduce((a, b) => a + b, 0));
 
             if(totalPower.reduce((a, b) => a + b, 0) > 0){
-                this.measurements.type("efficiency").variant("predicted").position("atEquipment").value(totalFlow.reduce((a, b) => a + b, 0) / totalPower.reduce((a, b) => a + b, 0));
+                this.measurements.type("efficiency").variant("predicted").position("atequipment").value(totalFlow.reduce((a, b) => a + b, 0) / totalPower.reduce((a, b) => a + b, 0));
             }
 
         }
@@ -821,6 +1060,13 @@ class MachineGroup {
     }
     
     async handleInput(source, demand, powerCap = Infinity, priorityList = null) {
+        
+        const demandQ = parseFloat(demand);
+
+        if(!Number.isFinite(demandQ)){
+            this.logger.error(`Invalid flow demand input: ${demand}. Must be a finite number.`);
+            return;
+        }
 
         //abort current movements
         await this.abortActiveMovements("new demand received");
@@ -828,7 +1074,6 @@ class MachineGroup {
         const scaling = this.scaling;
         const mode = this.mode;
         const dynamicTotals = this.calcDynamicTotals();
-        const demandQ = parseFloat(demand);
         let demandQout = 0; // keep output Q by default 0 for safety
 
         this.logger.debug(`Handling input from ${source}: Demand = ${demand}, Power Cap = ${powerCap}, Priority List = ${priorityList}`);
@@ -857,7 +1102,6 @@ class MachineGroup {
                 break;
 
             case "normalized":
-
                 this.logger.debug(`Normalizing flow demand: ${demandQ} with min: ${dynamicTotals.flow.min} and max: ${dynamicTotals.flow.max}`);
                 if(demand < 0){
                     this.logger.debug(`Turning machines off`);
@@ -875,7 +1119,6 @@ class MachineGroup {
         }
 
 
-
         // Execute control based on mode
         switch(mode) {
             case "prioritycontrol":
@@ -911,7 +1154,7 @@ class MachineGroup {
 
     async turnOffAllMachines(){
         await Promise.all(Object.entries(this.machines).map(async ([machineId, machine]) => {
-            if (this.isMachineActive(machineId)) { await machine.handleInput("parent", "execSequence", "shutdown"); }
+            if (this.isMachineActive(machineId)) { await machine.handleInput("parent", "execsequence", "shutdown"); }
         }));
     }
 
@@ -929,7 +1172,7 @@ class MachineGroup {
           this.measurements.getVariants(type).forEach(variant => {
     
             const downstreamVal = this.measurements.type(type).variant(variant).position("downstream").getCurrentValue();
-            const atEquipmentVal = this.measurements.type(type).variant(variant).position("atEquipment").getCurrentValue();
+            const atEquipmentVal = this.measurements.type(type).variant(variant).position("atequipment").getCurrentValue();
             const upstreamVal = this.measurements.type(type).variant(variant).position("upstream").getCurrentValue();
     
             if (downstreamVal != null) {
@@ -939,7 +1182,7 @@ class MachineGroup {
               output[`upstream_${variant}_${type}`] = upstreamVal;
             }
             if (atEquipmentVal != null) {
-              output[`atEquipment_${variant}_${type}`] = atEquipmentVal;
+              output[`atequipment${variant}_${type}`] = atEquipmentVal;
             }
             if (downstreamVal != null && upstreamVal != null) {
               const diffVal = this.measurements.type(type).variant(variant).difference().value;
@@ -965,7 +1208,7 @@ class MachineGroup {
 
 module.exports = MachineGroup;
 /*
-
+const {coolprop} = require('generalFunctions');
 const Machine = require('../../rotatingMachine/src/specificClass');
 const Measurement = require('../../measurement/src/specificClass');
 const specs = require('../../generalFunctions/datasets/assetData/curves/hidrostal-H05K-S03R.json');
@@ -993,9 +1236,9 @@ function createBaseMachineConfig(machineNum, name,specs) {
         mode: {
             current: "auto",
             allowedActions: {
-                auto: ["execSequence", "execMovement", "statusCheck"],
-                virtualControl: ["execMovement", "statusCheck"],
-                fysicalControl: ["statusCheck"]
+                auto: ["execsequence", "execmovement", "statuscheck"],
+                virtualControl: ["execmovement", "statuscheck"],
+                fysicalControl: ["statuscheck"]
             },
             allowedSources: {
                 auto: ["parent", "GUI"],
@@ -1103,7 +1346,7 @@ async function makeMachines(){
         const percMax = 100;
 
         try{
-           /*
+           
             for(let demand = mg.dynamicTotals.flow.min ; demand <= mg.dynamicTotals.flow.max ; demand += 2){
                 //set pressure
                 
@@ -1155,4 +1398,4 @@ async function makeMachines(){
 
 makeMachines();
 
-//*/
\ No newline at end of file
+//*/