node-red-opcua-otmr/opcua-otmr.html

OPCUA communication

<script type="text/javascript">
    RED.nodes.registerType('opcua-otmr', {
        category: 'function',
        color: '#77BFC7',
        defaults: {
            name: { value: "" },
            endpoint: { value: "", required: true },
            port: { value: 4840, validate: RED.validators.number(), required: true },
            nodeIds: { value: "", required: true },
            operation: { value: "read", required: true },
            dataType: { value: "" }
        },
        inputs: 1,
        outputs: 1,
        icon: "node-red/parser-xml.svg",
        label: function() {
            return this.name || "opcua-otmr";
        },
        oneditprepare: function() {
            $('#node-input-name').val(this.name);
            $('#node-input-operation').val(this.operation);
            $('#node-input-endpoint').val(this.endpoint);
            $('#node-input-port').val(this.port);
            $('#node-input-nodeIds').val(this.nodeIds);
            $('#node-input-dataType').val(this.dataType);
        },
        oneditsave: function() {
            this.name = $('#node-input-name').val();
            this.operation = $('#node-input-operation').val();
            this.endpoint = $('#node-input-endpoint').val();
            this.port = $('#node-input-port').val();
            this.nodeIds = $('#node-input-nodeIds').val();
            this.dataType = $('#node-input-dataType').val();

            if (!this.endpoint || !this.port || !this.nodeIds) {
                RED.notify("Endpoint URL, Port, and Node IDs are required fields.", "error");
                return false;
            }
        }
    });
</script>

<script type="text/html" data-template-name="opcua-otmr">
    <div class="form-row">
        <label for="node-input-name">Name</label>
        <input type="text" id="node-input-name" placeholder="Name">
    </div>
    <div class="form-row">
        <label for="node-input-operation">Operation</label>
        <select id="node-input-operation">
            <option value="read">Read</option>
            <option value="write">Write</option>
        </select>
    </div>
    <div class="form-row">
        <label for="node-input-endpoint">Endpoint</label>
        <input type="text" id="node-input-endpoint" placeholder="opc.tcp://hostname">
    </div>
    <div class="form-row">
        <label for="node-input-port">Port</label>
        <input type="text" id="node-input-port" placeholder="4840">
    </div>
    <div class="form-row">
        <label for="node-input-nodeIds">Node IDs</label>
        <input type="text" id="node-input-nodeIds" placeholder="NodeID 1, NodeID 2, ...">
    </div>
</script>

<script type="text/html" data-help-name="opcua-otmr">
    <p>This node communicates with an OPC UA server. You can choose to read or write values from specified Node IDs.</p>
    <p>For write mode, send a simple value in <code>msg.payload</code> (e.g., <code>42</code> or <code>"ON"</code>), and the node will use the configured Node ID and Data Type.</p>
</script>