異世界


2019年7月30日 星期二

Modbus TCP

2019/07/31 以 NuGet 安裝 EasyModbusTCP
開發者網頁: http://easymodbustcp.net/en/
範      例: http://easymodbustcp.net/codesampleseasymodbustcp-net

NET: Modbus-RTU Master Simple Read and Write operations


using System;
using EasyModbus;
namespace ModbusRS485Master
{
class Program
{
public static void Main(string[] args)
{
ModbusClient modbusClient = new ModbusClient("COM1");
//modbusClient.UnitIdentifier = 1; Not necessary since default slaveID = 1;
//modbusClient.Baudrate = 9600; // Not necessary since default baudrate = 9600
//modbusClient.Parity = System.IO.Ports.Parity.None;
//modbusClient.StopBits = System.IO.Ports.StopBits.Two;
//modbusClient.ConnectionTimeout = 500;
modbusClient.Connect();
Console.WriteLine("Value of Discr. Input #1: "+modbusClient.ReadDiscreteInputs(0,1)[0].ToString()); //Reads Discrete Input #1
Console.WriteLine("Value of Input Reg. #10: "+modbusClient.ReadInputRegisters(9,1)[0].ToString()); //Reads Inp. Reg. #10
modbusClient.WriteSingleCoil(4,true); //Writes Coil #5
modbusClient.WriteSingleRegister(19,4711); //Writes Holding Reg. #20
Console.WriteLine("Value of Coil #5: "+modbusClient.ReadCoils(4,1)[0].ToString()); //Reads Discrete Input #1
Console.WriteLine("Value of Holding Reg.. #20: "+modbusClient.ReadHoldingRegisters(19,1)[0].ToString()); //Reads Inp. Reg. #10
modbusClient.WriteMultipleRegisters(49, new int[10] {1,2,3,4,5,6,7,8,9,10});
modbusClient.WriteMultipleCoils(29, new bool[10] {true,true,true,true,true,true,true,true,true,true,});
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true);
}
}
}


-------------------------------------------
NET: Modbus-TCP  Client Simple Read and Write operations

namespace ModbusClientApplication
{
    class Program
    {
        public static void Main(string[] args)
        {
            ModbusClient modbusClient = new ModbusClient("190.201.100.100", 502);    //Ip-Address and Port of Modbus-TCP-Server
            modbusClient.Connect();                                                    //Connect to Server
            modbusClient.WriteMultipleCoils(4, new bool[] {true, true, true, true, true, true, true, true, true, true});    //Write Coils starting with Address 5
            bool[] readCoils = modbusClient.ReadCoils(9,10);                        //Read 10 Coils from Server, starting with address 10
            int[] readHoldingRegisters = modbusClient.ReadHoldingRegisters(0,10);    //Read 10 Holding Registers from Server, starting with Address 1
 
            // Console Output
            for (int i = 0; i < readCoils.Length; i++)
                Console.WriteLine("Value of Coil " + (9 + i + 1) + " " + readCoils[i].ToString());
                        
            for (int i = 0; i < readHoldingRegisters.Length; i++)
                Console.WriteLine("Value of HoldingRegister " + (i + 1) + " "+ readHoldingRegisters[i].ToString());            
            modbusClient.Disconnect();                                                //Disconnect from Server
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }

}

-------------------------------------------
Read Values from Modus-Server and Publish the Values to a MQTT-Broker
class Program
    {
        static void Main(string[] args)
        {
            EasyModbus.ModbusClient modbusClient = new EasyModbus.ModbusClient("127.0.0.1", 502);
            //Increase the Connection Timeout to 5 seconds
            modbusClient.ConnectionTimeout = 5000;
            //We create a Log File. This will also active the Event logging
            modbusClient.LogFileFilename = "test.txt";
            //The Messages sent to the MQTT-Broker will be retained in the Broker. After subscribtion, the client will automatically
            //receive the last retained message. By default the Retain-Flag is FALSE -> Messages will not be retained
            modbusClient.MqttRetainMessages = true;
            //Connect to the ModbusTCP Server
            modbusClient.Connect();
            while (true)
            {
                // We read two registers from the Server, and Publish them to the MQTT-Broker. By default Values will be published
                // on change By default we publish to the Topic 'easymodbusclient/' and the the address e.g. ''easymodbusclient/holdingregister1'
                // The propery "Password" and "Username" can be used to connect to a Broker which require User and Password. By default the
                //MQTT-Broker port is 1883
                int[] holdingRegister = modbusClient.ReadHoldingRegisters(60, 2, "www.mqtt-dashboard.com");
                System.Threading.Thread.Sleep(1000);
            }
            modbusClient.Disconnect();
            Console.ReadKey();
        }
    }

----------------------------------------------