Client

Bridge

Ctrl2MqttBridge

Provides connectivity to an industrial controller via MQTT Used in production environment to connect Siemens 840dsl and Rexroth MTX (CML85) controllers to HMI software.

Main features

• Read/Write values
• Subscribe to items
• Unsubscribe from items

Included subprojects

• Ctrl2MqttClient -> use this dll in any project to easily connect to any controller
• SetupCreator/SetupTools -> used to build the MqttBridgeSetup.exe sfx installer
• Siemens.Sinumerik.Operate.Services.Stub -> Stub for the commercial Siemens OperateNet Libraries

Prerequisites

• Connectivity can base on OPC UA
• or via OperateNET library (provided by Siemens)
• To use OperateNET library the "Siemens.Sinumerik.Operate.Services.dll" files are required in External directory during build

Cheatsheet

• Add PackageReference to any of your .NET Projects to Ctrl2MqttClient
• Implement a new Class inheriting from CtrlConnection (see example below)
• In the output dir of your project you should find the Ctrl2MqttBridgeSetup > this has to be installed / running to communicate

Usage of Ctrl2MqttBridge / Ctrl2MqttClient

Ctrl2MqttBridge

• Bridge is either installed via the SFX installer or the -i switch
• It integrates in Sinumerik Operate PROC610 and runs in the background
• Check configuration to setup
• OpcUaMode -> TRUE uses OPC UA, FALSE will try to use OperateNet and falls back to OPC UA when it fails
• ServerName -> IP of OPC UA Server to connect to
• MqttPort -> stays 51883 unless there is a need to change. Must corelate to CtrlConnection
• OpcUaPort -> Port of OPC UA Server to connect to
• OpcUaUsername -> Username for OPC UA Server
• OpcUaPassword -> Password for OPC UA Server
• ExternalBrokerUrl -> attach all topics to an external broker (for debugging)
• EnableExternalBroker -> false unless there is a need to use it
• EnableStatus -> true to see BridgeStatus messages

Ctrl2MqttClient

• Just put a reference on the Ctrl2MqttClient library package (via NuGet)
• setup a new class and inherit from BridgeConnection

public class CtrlConnection : BridgeConnection
{

    public CtrlConnection()
    {
        ConnectionHandler += CtrlConnection_ConnectionHandler;
        ConnectSync("192.168.214.241",51883,new Guid().ToString());
    }


    private void CtrlConnection_ConnectionHandler(object sender, bool e)
    {
        if (e)
            SubsClientThread();
    }

    void SubsClientThread()
    {
        if (subsc_Main == null)
        {
            subsc_Main = new SubscriptionHelper();
            subsc_Main.DataChanged += Subsc_Main_DataChanged;
        }
        AddMonitoredOPCItem("/Channel/Parameter/r[u1,1]", subsc_Main);
    }

    private void Subsc_Main_DataChanged(object sender, MonitoredItem monitoredItem)
    {
        //Callback when R1 changed...
    }
}

• ToDo: improve documentation

• Automate Versioning

• Simultanous reads/write with queuing