How can assign the IO controller?

Below is a very basic console app. Note this is not properly written and should not be used "as is". E.g. it is accessing directly PLC1.DeviceItems[1].DeviceItems[6] rahter than iterating using for each with a check before performing the action. 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using Siemens.Engineering;

using Siemens.Engineering.HW;

using System.IO;

using Siemens.Engineering.HW.Features;

//NOTE!!!!!!!!!!!!!!!!!!!!!

//Code is written in a "bad way" with the purpose of demonstrating the object model

// The code used should not be copied and used "as is".

namespace Demo

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void btn_start_Click(object sender, EventArgs e)

{

// Start TIA with UI

TiaPortal myTia = new TiaPortal(TiaPortalMode.WithUserInterface);

//create project

DirectoryInfo targetDirectory = new DirectoryInfo("D:\\TIA");

Project myProject = myTia.Projects.Create(targetDirectory, "Demo");

//Add HW(Devices)

string PLC1MLFB = "OrderNumber:" + "6ES7 515-2AM01-0AB0" + "/" + "V2.5";

string PLC1Name = "PLC1";

string PLC2MLFB = "OrderNumber:" + "6ES7 512-1DK01-0AB0" + "/" + "V2.5";

string PLC2Name = "PLC2";

string SwitchMLFB = "OrderNumber:" + "6GK5 205-3BD00-2AB2" + "/" + "V3.0";

string SwitchName = "SCALANCE XB205";

string HMIMLFB = "OrderNumber:" + "6AV2 124-0GC01-0AX0" + "/" + "15.0.0.0";

string HMIName = "HMI";

Device PLC1 = myProject.Devices.CreateWithItem(PLC1MLFB, "test1", "test2");

Device PLC2 = myProject.Devices.CreateWithItem(PLC2MLFB, PLC2Name, PLC2Name);

Device Switch = myProject.Devices.CreateWithItem(SwitchMLFB, SwitchName, SwitchName);

Device HMI = myProject.Devices.CreateWithItem(HMIMLFB, HMIName, null);

//Adding modules on the two PLCs

string DQ16MLFB = "OrderNumber:" + "6ES7 522-1BH00-0AB0" + "/" + "V2.0";

string DQ16Name = "DQ16";

string DQ8MLFB = "OrderNumber:" + "6ES7 132-6BF00-0BA0" + "/" + "V1.1";

string DQ8Name = "DQ8";

string serverMMLFB = "OrderNumber:" + "6ES7 193-6PA00-0AA0" + "/" + "V1.1";

string serverMName = "ServerModule";

PLC1.DeviceItems[0].PlugNew(DQ16MLFB, DQ16Name, 2);

PLC2.DeviceItems[0].PlugNew(DQ8MLFB, DQ8Name, 2);

PLC2.DeviceItems[0].PlugNew(serverMMLFB, serverMName, 3);

//Creating subnets

NetworkInterface NWIPLC1;

NetworkInterface NWIPLC2;

NetworkInterface NWIHMI;

NetworkInterface NWISwitch;

//PLC1

NWIPLC1 = ((IEngineeringServiceProvider)PLC1.DeviceItems[1].DeviceItems[6]).GetService<NetworkInterface>();

Subnet subnet = NWIPLC1.Nodes.First().CreateAndConnectToSubnet("Profinet");

NWIPLC1.Nodes.First().SetAttribute("Address", "192.168.0.3");

//PLC2

NWIPLC2 = ((IEngineeringServiceProvider)PLC2.DeviceItems[1].DeviceItems[5]).GetService<NetworkInterface>();

NWIPLC2.Nodes.First().ConnectToSubnet(subnet);

NWIPLC2.Nodes.First().SetAttribute("Address", "192.168.0.4");

//HMI

NWIHMI = ((IEngineeringServiceProvider)HMI.DeviceItems[1].DeviceItems[0]).GetService<NetworkInterface>();

NWIHMI.Nodes.First().ConnectToSubnet(subnet);

NWIHMI.Nodes.First().SetAttribute("Address", "192.168.0.5");

//Switch

NWISwitch = ((IEngineeringServiceProvider)Switch.DeviceItems[1].DeviceItems[1]).GetService<NetworkInterface>();

NWISwitch.Nodes.First().ConnectToSubnet(subnet);

NWISwitch.Nodes.First().SetAttribute("Address", "192.168.0.2");

//Creating IO system

IoSystem ioSystem = NWIPLC1.IoControllers.First().CreateIoSystem("PNIO");

NWISwitch.IoConnectors.First().ConnectToIoSystem(ioSystem);

}

}

}