Tips:
1、目前NetCore下与Modbus通信的框架主要选择了 Modbus.Net https://github.com/parallelbgls/Modbus.Net
2、modbus是常用的工业通信协议,在软件调试时可以通过modbus poll+slave模拟通信通过达到调试目的,下图是我使用软件
1)为串口模拟工具
2)为Modbus Slave模拟工具
3)为Modbus Poll模拟,修改对应Value值即可发送到Slave
调用和测试代码:
public class ModbusTest { public Dictionary<string, ReturnUnit> GetModbusValues(List<AddressUnit> addresses, ModbusType connectType = ModbusType.Tcp, string connectString = "127.0.0.1") { var _modbusTcpMachine = new ModbusMachine(connectType, connectString, addresses, true, 2, 0); var result = _modbusTcpMachine.GetDatas(MachineGetDataType.Address); return result; } public bool SetModbusValues(List<AddressUnit> addresses, Dictionary<string, double> setDict, ModbusType connectType = ModbusType.Tcp, string connectString = "127.0.0.1") { var _modbusTcpMachine = new ModbusMachine(connectType, connectString, addresses, true, 2, 0); var result = _modbusTcpMachine.SetDatas(MachineSetDataType.Address, setDict); return result; } //获取测试 [Obsolete("固定写死的测试方法,临时测试用")] public void TestGetModbusValues() { var addresses = new List<AddressUnit>(); for (int i = 0; i < 6; i++) { addresses.Add(new AddressUnit { Id = "1", Area = "4X", Address = i + 1, DataType = typeof(ushort) }); } var _modbusTcpMachine = new ModbusMachine(ModbusType.RtuInTcp, "127.0.0.1", addresses, true, 2, 0); var result = _modbusTcpMachine.GetDatas(MachineGetDataType.Address); foreach (var item in result) { Console.WriteLine($"Key:{item.Key} Value:{item.Value.PlcValue}"); } } //设置测试 [Obsolete("固定写死的测试方法,临时测试用")] public void TestSetModbusValues() { var addresses = new List<AddressUnit>(); var setDict = new Dictionary<string, double>(); for (int i = 0; i < 6; i++) { addresses.Add(new AddressUnit { Id = "1", Area = "4X", Address = i + 1, DataType = typeof(ushort) }); var r = new Random(); var intValue = r.Next(0, 100); System.Threading.Thread.Sleep(100); setDict.Add($"4X {i + 1}.0", intValue); } var _modbusTcpMachine = new ModbusMachine(ModbusType.RtuInTcp, "127.0.0.1", addresses, true, 2, 0); _modbusTcpMachine.SetDatas(MachineSetDataType.Address, setDict); } }
也可以使用Modbus-TCP Client Tester来模拟展现,可以写入或读写寄存器