{
  "channels": [
    {
      "channelId": "serial_0",
      "protocol": "modbus",
      "transport": "rtu",
      "port": "/dev/ttyS3",
      "baudRate": 9600,
      "parity": "N",
      "dataBits": 8,
      "stopBits": 1,
      "pollIntervalMs": 500
    }
  ]
}