"# \u57fa\u4e8eJava\u7684Modbus TCP Server \u901a\u8baf\u793a\u4f8b\u4ee3\u7801\n\n> 2022-03-18 | 2022-03-18\n> https:\/\/www.modbus.cn\/en\/6775.html\n\n**Modbus\u7f16\u7a0b\u5f00\u53d1**\n\n---\n\n\u57fa\u4e8eJava\u7684Modbus\u901a\u8baf\u793a\u4f8b\u4ee3\u7801\n\n```\n<span class=\"n\">package<\/span> <span class=\"n\">run<\/span><span class=\"p\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">de.re.easymodbus.server.<\/span><span class=\"o\">*<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"n\">public<\/span> <span class=\"k\">class<\/span> <span class=\"nc\">run<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"n\">public<\/span> <span class=\"n\">static<\/span> <span class=\"n\">void<\/span> <span class=\"n\">main<\/span><span class=\"p\">(<\/span><span class=\"n\">String<\/span><span class=\"p\">[]<\/span> <span class=\"n\">args<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">{<\/span>\r\n        <span class=\"n\">ModbusServer<\/span> <span class=\"n\">modbusServer<\/span> <span class=\"o\">=<\/span> <span class=\"n\">new<\/span> <span class=\"n\">ModbusServer<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"n\">modbusServer<\/span><span class=\"o\">.<\/span><span class=\"n\">setPort<\/span><span class=\"p\">(<\/span><span class=\"mi\">1522<\/span><span class=\"p\">);<\/span><span class=\"o\">\/\/<\/span><span class=\"n\">Note<\/span> <span class=\"n\">that<\/span> <span class=\"n\">Standard<\/span> <span class=\"n\">Port<\/span> <span class=\"k\">for<\/span> <span class=\"n\">Modbus<\/span> <span class=\"n\">TCP<\/span> <span class=\"n\">communication<\/span> <span class=\"ow\">is<\/span> <span class=\"mi\">502<\/span>\r\n        <span class=\"n\">modbusServer<\/span><span class=\"o\">.<\/span><span class=\"n\">coils<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">true<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"n\">modbusServer<\/span><span class=\"o\">.<\/span><span class=\"n\">holdingRegisters<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1234<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">try<\/span>\r\n        <span class=\"p\">{<\/span>\r\n            <span class=\"n\">modbusServer<\/span><span class=\"o\">.<\/span><span class=\"n\">Listen<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"p\">}<\/span>\r\n        <span class=\"n\">catch<\/span> <span class=\"p\">(<\/span><span class=\"n\">java<\/span><span class=\"o\">.<\/span><span class=\"n\">io<\/span><span class=\"o\">.<\/span><span class=\"n\">IOException<\/span> <span class=\"o\">|<\/span> <span class=\"n\">Exceptions<\/span><span class=\"o\">.<\/span><span class=\"n\">ModbusException<\/span> <span class=\"n\">e<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"p\">{<\/span>           \r\n        <span class=\"p\">}<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\n```\n\n---\n*modbus.cn*\n"