{
  "devices": [
    {
      "physicalDeviceId": "phy_modbus_slave_1",
      "channelId": "serial_0",
      "protocol": "modbus",
      "slaveId": 1,
      "points": [
        {
          "physicalPointId": "phy_modbus_s1_r40001",
          "register": 40001,
          "function": 3,
          "scale": 0.1,
          "signalType": "AI",
          "writable": false
        },
        {
          "physicalPointId": "phy_modbus_s1_r40002",
          "register": 40002,
          "function": 3,
          "writeFunction": 6,
          "scale": 1.0,
          "signalType": "AO",
          "writable": true
        }
      ]
    }
  ]
}