vue项目使用modbus实现串口通讯的示例代码

npm install modbus-serial --save

npm install @serialport/bindings --save

sudo setfacl -R -m u:$(whoami) -m g:$(whoami) /dev/tty*

<template>
  <div>
    <h2>Modbus Communication</h2>
    <button @click="readHoldingRegisters">Read Holding Registers</button>
    <button @click="writeSingleRegister">Write Single Register</button>
    <p>Received Data: {{ receivedData }}</p>
  </div>
</template>

<script>
import { ModbusRTU } from 'modbus-serial';

export default {
  data() {
    return {
      receivedData: null,
    };
  },
  methods: {
    async readHoldingRegisters() {
      try {
        // 创建Modbus RTU连接
        const client = new ModbusRTU();

        // 打开串口
        await client.connect('/dev/ttyS0'); // 替换为实际的串口路径

        // 配置Modbus参数
        client.setID(1); // 设置从站ID
        client.setTimeout(1000); // 设置超时时间

        // 读取保持寄存器
        const registers = await client.readHoldingRegisters(0, 10); // 从地址0开始读取10个寄存器

        // 更新数据
        this.receivedData = registers;

        // 断开连接
        await client.close();
      } catch (error) {
        console.error('Error reading holding registers:', error);
      }
    },
    async writeSingleRegister() {
      try {
        // 创建Modbus RTU连接
        const client = new ModbusRTU();

        // 打开串口
        await client.connect('/dev/ttyS0'); // 替换为实际的串口路径

        // 配置Modbus参数
        client.setID(1); // 设置从站ID
        client.setTimeout(1000); // 设置超时时间

        // 写入单个寄存器
        await client.writeSingleRegister(0, 12345); // 将值12345写入地址0的寄存器

        console.log('Write successful');

        // 断开连接
        await client.close();
      } catch (error) {
        console.error('Error writing single register:', error);
      }
    },
  },
};
</script>

<template>
  <div id="app">
    <ModbusCommunication />
  </div>
</template>

<script>
import ModbusCommunication from './components/ModbusCommunication.vue';

export default {
  name: 'App',
  components: {
    ModbusCommunication,
  },
};
</script>

npm run serve