"# \u4f7f\u7528NModBus\u5e93\u5b9e\u73b0Modbus Master\u7684\u793a\u4f8b\u4ee3\u7801\n\n> 2023-02-12 | 2023-02-12\n> https:\/\/www.modbus.cn\/en\/11738.html\n\n**Modbus\u7f16\u7a0b\u5f00\u53d1**\n\n---\n\n```\nusing System;\nusing System.Net.Sockets;\nusing Modbus.Data;\nusing Modbus.Device;\n\nnamespace ModbusMasterExample\n{\n    class Program\n    {\n        static void Main(string[] args)\n        {\n            TcpClient client = new TcpClient(\"localhost\", 502); \/\/ \u8fde\u63a5\u5230Modbus TCP\u670d\u52a1\u5668\n            ModbusIpMaster master = ModbusIpMaster.CreateIp(client); \/\/ \u521b\u5efaModbus Master\n\n            ushort startAddress = 0;\n            ushort numRegisters = 10;\n\n            \/\/ \u8bfb\u53d6\u7ebf\u5708\u72b6\u6001\n            bool[] coils = master.ReadCoils(1, startAddress, numRegisters);\n            Console.WriteLine(\"Coils: \" + String.Join(\", \", coils));\n\n            \/\/ \u8bfb\u53d6\u79bb\u6563\u8f93\u5165\u72b6\u6001\n            bool[] inputs = master.ReadInputs(2, startAddress, numRegisters);\n            Console.WriteLine(\"Inputs: \" + String.Join(\", \", inputs));\n\n            \/\/ \u8bfb\u53d6\u4fdd\u6301\u5bc4\u5b58\u5668\n            ushort[] holdingRegisters = master.ReadHoldingRegisters(3, startAddress, numRegisters);\n            Console.WriteLine(\"Holding Registers: \" + String.Join(\", \", holdingRegisters));\n\n            \/\/ \u8bfb\u53d6\u8f93\u5165\u5bc4\u5b58\u5668\n            ushort[] inputRegisters = master.ReadInputRegisters(4, startAddress, numRegisters);\n            Console.WriteLine(\"Input Registers: \" + String.Join(\", \", inputRegisters));\n        }\n    }\n}\n\n```\n\n\u5b9e\u4f8b2\uff1a\n\n```\nprivate static void Main(string[] args)\n        {\n            try\n            {\n                ModbusSerialRtuMasterWriteRegisters();\n                ModbusTcpMasterReadInputs();\n            }\n            catch (Exception e)\n            {\n                Console.WriteLine(e.Message);\n            }\n \n            Console.WriteLine(\"Press any key to continue...\");\n            Console.ReadKey();\n        }\n \n        \/\/\/ <summary>\n        \/\/\/ Simple Modbus serial RTU master write holding registers example.\n        \/\/\/ <\/summary>\n        public static void ModbusSerialRtuMasterWriteRegisters()\n        {\n            using (SerialPort port = new SerialPort(\"COM3\"))\n            {\n                \/\/ configure serial port\n                port.BaudRate = 9600;\n                port.DataBits = 8;\n                port.Parity = Parity.None;\n                port.StopBits = StopBits.One;\n                port.Open();\n \n                var factory = new ModbusFactory();\n                IModbusMaster master = factory.CreateRtuMaster(port);\n \n                byte slaveId = 1;\n                ushort startAddress = 100;\n                ushort[] registers = new ushort[] { 1, 2, 3 };\n \n                \/\/ write three registers\n                master.WriteMultipleRegisters(slaveId, startAddress, registers);\n            }\n        }\n \n        \/\/\/ <summary>\n        \/\/\/     Simple Modbus TCP master read inputs example.\n        \/\/\/ <\/summary>\n        public static void ModbusTcpMasterReadInputs()\n        {\n            using (TcpClient client = new TcpClient(\"127.0.0.1\", 502))\n            {\n                var factory = new ModbusFactory();\n                IModbusMaster master = factory.CreateMaster(client);\n \n                \/\/ read five input values\n                ushort startAddress = 100;\n                ushort numInputs = 5;\n                bool[] inputs = master.ReadInputs(0, startAddress, numInputs);\n \n                for (int i = 0; i < numInputs; i++)\n                {\n                    Console.WriteLine($\"Input {(startAddress + i)}={(inputs[i] ? 1 : 0)}\");\n                }\n            }\n \n            \/\/ output:\n            \/\/ Input 100=0\n            \/\/ Input 101=0\n            \/\/ Input 102=0\n            \/\/ Input 103=0\n            \/\/ Input 104=0\n        }\n```\n\n\u4e0a\u8ff0\u793a\u4f8b\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2aModbus TCP\u5ba2\u6237\u7aef\uff0c\u7136\u540e\u4f7f\u7528Modbus Master\u5bf9\u8c61\u5b9e\u73b0\u4e86\u8bfb\u53d6\u7ebf\u5708\u72b6\u6001\u3001\u79bb\u6563\u8f93\u5165\u72b6\u6001\u3001\u4fdd\u6301\u5bc4\u5b58\u5668\u548c\u8f93\u5165\u5bc4\u5b58\u5668\u7684\u529f\u80fd\u3002\u5f53\u7136\uff0c\u5b9e\u9645\u4f7f\u7528\u65f6\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u4fee\u6539\u3002\n\n## NModbus\u5e93\u5728\u672c\u9875\u9762\u4e0b\u8f7d\n\n---\n*modbus.cn*\n"