Node reference

Trigger a message, inspect its contents and observe errors or state changes.

Start with Inject and Debug. Configure Catch for errors reported by nodes, and inspect Status separately.

Connect the flow to supported serial ports and hardware interfaces.

Match wiring and serial settings. One physical serial port has one owner; GPIO availability and pin mapping depend on the hardware.

Transform values, route messages and control when information is emitted.

Validate types before scaling. Rate limits and delays are not a persistent offline message queue.

Exchange messages with a broker, service or application.

Configure the endpoint, credentials and required TLS settings. Confirm the result at the receiver, not only in Debug.

Split, collect, order and group related messages.

Preserve sequence metadata and define the completion condition. Bound batch size and waiting time.

Convert structured text into message properties and back.

Check the actual payload type and encoding. A format parser does not interpret an undocumented industrial protocol.

Read files, write records and retain selected application state.

Choose the permitted storage path, capacity and retention policy. Memory context is not durable storage.

Add industrial acquisition and management with compatible packages.

Modbus and SNMP integrations are available in the documented runtime. Confirm installed versions, device roles, point types and write authorization.

Bring verified PLC readings into a flow for processing and reporting.

Use the delivered PLC acquisition service or a verified compatible node. Confirm the PLC model and driver; Modbus support is not universal PLC support.

Connect machine data through an agreed controller interface.

Provide the machine and controller model, API or protocol, data list and permissions. CNC connectivity is assessed as a project integration.

Reuse a confirmed IEC104 data path in a local application.

Agree the master or slave role, point addressing and command feedback with the delivered service. A gateway IEC104 function does not by itself provide a Node-RED node.

Plan a building-equipment data path around the actual BACnet interface.

Confirm BACnet/IP or MS/TP, objects, instances and read/write scope. BACnet connectivity is assessed as a project integration.

Work with OPC UA endpoints, nodes and application data.

OPC UA integration is available in the documented runtime. Check endpoint security, certificates, NodeIds and installed node help on the delivered unit.

Turn readings into time-stamped records and useful trends.

Define timestamps, retention, restart behavior and storage limits. A chart, context store and historical database serve different purposes.