update

src/specificClass.js

@@ -2,6 +2,10 @@
 const EventEmitter = require("events");
 const {logger,configUtils,configManager, MeasurementContainer, interpolation , childRegistrationUtils} = require('generalFunctions');
 
+/**
+ * Machine group controller domain model.
+ * Aggregates multiple rotating machines and coordinates group-level optimization/control.
+ */
 class MachineGroup {
     constructor(machineGroupConfig = {}) {
 
@@ -50,7 +54,8 @@ class MachineGroup {
     registerChild(child,softwareType) {
         this.logger.debug('Setting up childs specific for this class');
 
-        const position = child.config.general.positionVsParent;
+        // Prefer functionality-scoped position metadata; keep general fallback for legacy nodes.
+        const position = child.config?.functionality?.positionVsParent || child.config?.general?.positionVsParent;
         
        if(softwareType == "machine"){
            // Check if the machine is already registered
@@ -1396,6 +1401,8 @@ async function makeMachines(){
 }
 
 
-makeMachines();
+if (require.main === module) {
+  makeMachines();
+}
 
 //*/