Italy:Come Leggere più varabili in OpcUa / English: How to Read multiple variables in OpcUa

Italy:
ciao,
Devo leggere delle variabili tramite Opc Ua ma le variabili sono tante come faccio a leggerle usando pochi nodi? grazie.

English:
Hello, I have to read some variables through OpcUa but there are so many variables how can I read them using few nodes?
thank you.

[
    {
        "id": "882b4b84a416953e",
        "type": "tab",
        "label": "Flow 4",
        "disabled": false,
        "info": ""
    },
    {
        "id": "eb08493124afe0eb",
        "type": "OpcUa-Client",
        "z": "882b4b84a416953e",
        "endpoint": "65f390f2746b4b99",
        "action": "readmultiple",
        "deadbandtype": "a",
        "deadbandvalue": 1,
        "time": 10,
        "timeUnit": "s",
        "certificate": "n",
        "localfile": "",
        "localkeyfile": "",
        "securitymode": "None",
        "securitypolicy": "None",
        "name": "passo",
        "x": 290,
        "y": 200,
        "wires": [
            [
                "a36b271eef0a2875",
                "c8af19bef17f1dd2"
            ]
        ]
    },
    {
        "id": "ace18a358ab89ad7",
        "type": "inject",
        "z": "882b4b84a416953e",
        "name": "",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "0.25",
        "crontab": "",
        "once": true,
        "onceDelay": "1",
        "topic": "ns=3;s=\"DB HMI TRN GT1\".\"Hmi_In\".\"ParOperatore\";",
        "payloadType": "date",
        "x": 130,
        "y": 200,
        "wires": [
            [
                "eb08493124afe0eb"
            ]
        ]
    },
    {
        "id": "a36b271eef0a2875",
        "type": "OpcUa-Item",
        "z": "882b4b84a416953e",
        "item": "ns=3;s=\"DB HMI TRN GT1\".\"Hmi_In\".\"ParOperatore\"",
        "datatype": "String",
        "value": "msg.payload",
        "name": "",
        "x": 520,
        "y": 180,
        "wires": [
            [
                "e7d7649297e5b244"
            ]
        ]
    },
    {
        "id": "c8af19bef17f1dd2",
        "type": "debug",
        "z": "882b4b84a416953e",
        "name": "",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": true,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "payload",
        "statusType": "auto",
        "x": 510,
        "y": 340,
        "wires": []
    },
    {
        "id": "e7d7649297e5b244",
        "type": "OpcUa-Client",
        "z": "882b4b84a416953e",
        "endpoint": "65f390f2746b4b99",
        "action": "write",
        "deadbandtype": "a",
        "deadbandvalue": 1,
        "time": 10,
        "timeUnit": "s",
        "certificate": "n",
        "localfile": "",
        "localkeyfile": "",
        "securitymode": "None",
        "securitypolicy": "None",
        "name": "",
        "x": 820,
        "y": 180,
        "wires": [
            []
        ]
    },
    {
        "id": "65f390f2746b4b99",
        "type": "OpcUa-Endpoint",
        "endpoint": "opc.tcp://10.137.1.20:4840",
        "secpol": "None",
        "secmode": "None",
        "login": false
    }
]


Resolved.