Reading the right Schneider Momentum PLC register or coil address using JAMOD

To save some money at work, I thought I would create a java program to right/write values to a Momentum PLC instead of having to purchase the WonderWare License from Schneider, but I can't seem to figure out the addressing on the PLC side. The Communication mode is Modbus/TCP and for testing purposes at home, I downloaded a PLC simulator, but I can't get it to work either. I connect to it fine, just, again, can't seem to poll the right address.

The coil output I am trying to read has the 400012 address on the plc side at work, and I am trying to replicate that.

Here is my javafx code built with Maven that connects to the PLC, I can read values, but I seem to never get the right one.

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import net.wimpi.modbus.io.ModbusTCPTransaction;
import net.wimpi.modbus.msg.ReadCoilsRequest;
import net.wimpi.modbus.msg.ReadCoilsResponse;
import net.wimpi.modbus.net.TCPMasterConnection;

import java.net.InetAddress;

public class PrimaryController {


@FXML
private Label labelValue;

@FXML
private Button primaryButton;

@FXML
void handleGetData(ActionEvent event) {
    try {
        getData();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

private void getData() throws Exception {

    // Connection
    TCPMasterConnection con = null;
    ModbusTCPTransaction trans = null;
    ReadCoilsRequest req = null;
    ReadCoilsResponse res = null;

    InetAddress ipAddress = null;

    try {
        ipAddress = InetAddress.getByName("localhost");
        con = new TCPMasterConnection(ipAddress);
        con.setPort(502);
        System.out.println("Connecting...");

        con.connect();

        req = new ReadCoilsRequest(12, 1);
        trans = new ModbusTCPTransaction(con);
        trans.setRequest(req);
        trans.execute();
        res = (ReadCoilsResponse) trans.getResponse();
        System.out.println("Response: " + res.getCoils().toString());
        con.close();


    } catch (Exception e) {
        e.printStackTrace();
    }


  }

}

Dependancy:

    <dependency>
        <groupId>net.wimpi</groupId>
        <artifactId>jamod</artifactId>
        <version>1.2</version>
    </dependency>

here is the PLC simulator I am using.

ModBus Simulator

I always get Response: 00000000

Is anyone experienced with communication between a PLC (Schneider Momentum) and Java?

Thanks!