diff --git a/MAC_use_cases/Model/MAC_use_casesEM.cs b/MAC_use_cases/Model/MAC_use_casesEM.cs
index 20220bf..12d5192 100644
--- a/MAC_use_cases/Model/MAC_use_casesEM.cs
+++ b/MAC_use_cases/Model/MAC_use_casesEM.cs
@@ -117,7 +117,7 @@ public override bool GenerateTiaPortal(TiaTemplateContext tiaTemplateContext, st
                     var s120 = HardwareGeneration.GenerateS120(this, "S120MACTest", "S120DeviceTest", "this drive is generated with MAC");
 
                     var s210 = HardwareGeneration.GenerateS210(this, "S210MACTest", "S210DeviceTest", "this drive is generated with MAC");
-                    var subnet1 = HardwareGeneration.GetOrCreateSubnet(SubnetsManager, "NewSubnet1");
+                    var subnet1 = HardwareGeneration.GetOrCreateSubnet(SubnetsManager, "PN/IE_1");
 
                     HardwareGeneration.ConnectDriveToSubnet(s120, subnet1, this);
                     HardwareGeneration.ConnectDriveToSubnet(s210, subnet1, this);
diff --git a/MAC_use_cases/Model/UseCases/HardwareGeneration.cs b/MAC_use_cases/Model/UseCases/HardwareGeneration.cs
index 00cfbcd..f30a131 100644
--- a/MAC_use_cases/Model/UseCases/HardwareGeneration.cs
+++ b/MAC_use_cases/Model/UseCases/HardwareGeneration.cs
@@ -119,20 +119,18 @@ public static void ConnectDriveToSubnet(ProfiDriveObjectInfo drive, ISubnetInfo
             var plcNwItf = module.ParentDeviceAsHardwareInfo.ControllerProfinetInterfaces.First();
             plcNwItf.ConnectedSubnetInfo = subnet;
 
+            var ioSystem = plcNwItf.ConnectedSubnetInfo.GetOrCreateIoSystem(plcNwItf, "PROFINET IO-System");
+
             if (device.GetType() == typeof(S120PNDriveInfo))
             {
                 (device as S120PNDriveInfo).ProfinetInterface.ConnectedSubnetInfo = subnet;
-                var ioSystem = plcNwItf.ConnectedSubnetInfo.GetOrCreateIoSystem(plcNwItf, "NewIoSystem");
                 ioSystem.ConnectIoDevice((device as S120PNDriveInfo).ProfinetInterface.IoConnectors.First().Value);
-
                 plcNwItf.Ports.First().Connect((device as S120PNDriveInfo).ProfinetInterface.Ports.First());
             }
             if (device.GetType() == typeof(S210DriveInfo))
             {
                 (device as S210DriveInfo).ProfinetInterface.ConnectedSubnetInfo = subnet;
-                var ioSystem = plcNwItf.ConnectedSubnetInfo.GetOrCreateIoSystem(plcNwItf, "NewIoSystem");
                 ioSystem.ConnectIoDevice((device as S210DriveInfo).ProfinetInterface.IoConnectors.First().Value);
-
                 plcNwItf.Ports.First().Connect((device as S210DriveInfo).ProfinetInterface.Ports.First());
             }