node-red-trexmes-service 1.7.1
service Nodes for trexMes systems
node-red-trexmes-service
A Node-RED package for trexMes Edge panel software — real-time event handling, form design, and control management over a NodeRED connector plugin.
📖 Full documentation: asafyurdakul.github.io/node-red-trexmes-service
What does it do?
node-red-trexmes-service collects real-time event triggers from 150–200 trexMes panels on the production floor into a single Node-RED server. It lets you:
- Capture panel events (business, system, communication, display, form)
- Design real-time WinForms with XML
- Bind data to form controls
- Invoke panel methods and read state contexts
- Trigger processes and run scripts on the panel side
- Generate Node-RED flows from natural language using an LLM
Prerequisite: The trexMes Edge panel software must have the NodeRED connector plugin enabled.
Install
Run the following command in your Node-RED install directory:
npm install node-red-trexmes-service
Or install directly from the Node-RED palette manager by searching for node-red-trexmes-service.
Nodes (23 total)
🟢 Core Nodes (2)
Required in every trexMes project.
| Node | I/O | Description |
|---|---|---|
| trex Subscriber | 0 → 1 | Registers all project events on the panel side. One per project, mandatory. |
| Responser | 1 → 0 | Returns the HTTP response to the panel. Must be the last node in every event flow. |
🔔 Event Nodes (8)
Triggered by the trexMes panel. Each captures a specific event type.
| Node | Description |
|---|---|
| Business Events | Business workflow events |
| System Events | System-level events |
| Communication Events | Communication layer events |
| Display Events | UI display events |
| Form Events | User interactions on custom forms |
| Display Methods | Main form method triggers |
| Method Returns | Asynchronous method invocation responses |
| Handle Setter | Dynamically sets IsHandled=true to stop further panel processing |
🧩 Form Nodes (5)
Custom form design, data binding and property management.
| Node | Description |
|---|---|
| Custom Form | Creates a form from XML design at runtime |
| Form Bind Controls | Binds data to form input fields |
| Control Properties | Sets properties of controls on the panel form |
| Button Configurator | Configures buttons on custom forms |
| Main Form Action | Triggers actions on the main panel form |
⚙️ Action Nodes (4)
Method invocation, process triggering, and script execution.
| Node | Description |
|---|---|
| Method Invoker | Calls a panel method with parameters (async — response via Method Returns) |
| Context Getter | Queries a station's StateContext data (async — response via Method Returns) |
| Execute Process | Triggers a defined process on the panel |
| Execute Script | Runs a script on the active form |
🤖 AI (1)
| Node | Description |
|---|---|
| LLM Flow Builder | Generates a Node-RED flow from a natural language prompt using an LLM |
Typical Flow Structure
trex Subscriber runs independently — it does not trigger other nodes. Event flows start directly from Event nodes.
[trex Subscriber] ← standalone, registers events on panel
[Business Events] → [Custom Form] → [Form Bind Controls] → [Responser]
[Display Methods] → [Method Invoker] → [Responser]
↓ (async)
[Method Returns] → [...process result...] → [Responser]
Every project needs exactly one
trex Subscriber. Every event flow must end with aResponser.
Requirements
| Component | Minimum Version |
|---|---|
| Node.js | 18.16+ |
| Node-RED | 3.0+ |
| trexMes Edge | NodeRED connector plugin enabled |
Documentation
Full reference documentation is available at:
https://asafyurdakul.github.io/node-red-trexmes-service/
Includes:
- Installation & quick start guide
- Architecture overview
- Per-node property tables, payload examples, and flow diagrams
- Flow examples (custom form, button configuration, method invocation)
- FAQ & troubleshooting
License & Author
Licensed under GPL-3.0-or-later.
Author: Asaf Yurdakul · trex Digital Manufacturing
