Slave
using NModbus;
using System.Net;
using System.Net.Sockets;
Console.Title = "ModbusSlave";
byte slaveId = 1;
int port = 502;
IPAddress address = new IPAddress(new byte[] { 127, 0, 0, 1 });
// 创建并启动TCP从站
TcpListener slaveTcpListener = new TcpListener(address, port);
slaveTcpListener.Start();
var factory = new ModbusFactory();
var network = factory.CreateSlaveNetwork(slaveTcpListener);
IModbusSlave slave = factory.CreateSlave(slaveId);
network.AddSlave(slave);
await network.ListenAsync();
// 创建主站
TcpClient masterTcpClient = new TcpClient(address.ToString(), port);
IModbusMaster master = factory.CreateMaster(masterTcpClient);
ushort startAddress = 7165;
master.WriteMultipleRegisters(1, startAddress,new ushort[] {1,2 });
// 清理
masterTcpClient.Close();
slaveTcpListener.Stop();
// output
// Register 100=0
// Register 101=0
// Register 102=0
// Register 103=0
// Register 104=0
Console.ReadKey(true);
Master
using System.Net.Sockets;
using NModbus;
Console.Title = "ModbusMaster";
using (TcpClient client = new TcpClient("127.0.0.1", 502))
{
var factory = new ModbusFactory();
IModbusMaster master = factory.CreateMaster(client);
byte slaveId = 1;
ushort startAddress = 7165;
ushort numInputs = 2;
//master.WriteMultipleRegisters(slaveId, startAddress, new ushort[] { 1, 2 });
ushort[] registers = master.ReadHoldingRegisters(slaveId, startAddress, numInputs);
Console.Write($"{startAddress}: {string.Join(" ",registers)}");
}
Console.ReadKey();
