Getting Started With C#

Add Terminals to the Station

In this example, a Beckhoff IO system consisting of a CX8190(PLC), EL1809(digital inputs terminal) and EL3024(current inputs terminal) is added to a station. From each terminal one input is added to the station. The current input is added a sensor to scale the current (4..20mA) to a pressure in bar.

internal class StationModule : InitializableCompositeModule
{
    private void AddBeckhoffIOSystem()
    {
        var master = new EthercatAdsIOMasterModule("AdsMaster");
    
        // First, add a plc terminal (e. g. EK1200 for a CX8090 plc) or a bus    coupler  (e. g. EK1100)
        // and then the terminals in the same order as in your TwinCat 3 project.
        master.AddTerminal(new EK1200(), "+S1-30K12_1");
        var digitalInputTerminal = master.AddTerminal(new EL1809(), "+S1-30K12_2");
        var currentInputTerminal = master.AddTerminal(new EL3024(), "+S1-30K12_3");
    
        // Select inputs of the digital input terminal
        // and set a LisRT module name.
        var di = digitalInputTerminal.Inputs[0];  // index 0 = channel 1
        di.Name = "Din";
    
        var ci = currentInputTerminal.Inputs[0];
        ci.Name = "Ain";
    
        // Setting up an sensor changes the scaling of the analog input.
        // Not required but the common use.
        ci.Sensor = new PressureSensor();
    
        SubModules.Add(master);
        SubModules.Add(di);
        SubModules.Add(ci);
    }
}

internal class PressureSensor : ISensor
{
    public string Unit { get; set; } = "bar";
    public Range Range { get; set; } = new Range(0, 10);
    public double Scale(double input) => (input - 4.0) * 10.0 / 16.0;
}

Tip

The AnalogInputs (e. g. of EL3064 or EL3204) can be adjusted with a multi-point adjustment in their service window.