@powerhouse-solutions/node-red-contrib-twinhub-energymanagement 1.1.0

TwinHub Energy Management nodes for Node-RED for Modbus-based meter acquisition, live data handling, local persistence, and MES or SQL upload.

npm install @powerhouse-solutions/node-red-contrib-twinhub-energymanagement

node-red-contrib-twinhub-energymanagement

TwinHub Energy Management – A complete Node-RED toolkit for collecting, processing, storing, and uploading machine energy data based on Modbus devices.

This package is provided by Powerhouse Solutions GmbH.

What this package does

This package provides a full pipeline for energy data processing:

• Read energy values from Modbus devices (e.g. Siemens PAC2200)
• Parse raw register data into usable numeric values
• Store live energy data per device
• Calculate consumption differences from counters
• Persist data in a local database
• Upload data to MES or SQL systems

Installation

Option 1 – via npm

cd C:\Users\Username.node-red npm install @powerhouse-solutions/node-red-contrib-twinhub-energymanagement

Option 2 – via Node-RED UI

1. Open Node-RED
2. Go to Manage Palette
3. Search for "twinhub energymanagement"
4. Click Install

Included Nodes

Data Acquisition

• energy-request-builder
  Creates Modbus request messages for energy signals

• energy-value-parser
  Converts Modbus register data into numeric values

Live Data Handling

• energy-live-data
  Stores current energy values per device and can export or push them via API

Persistence

• energy-store-counter
  Calculates consumption (diff) from counter values

• energy-db-functions
  Creates and manages the local database structure

Upload Pipeline

• energy-select-pending
  Selects not-yet-uploaded records

• energy-upload-data
  Uploads data to:

  • MES API
  • SQL Server (Stored Procedure)

Config Nodes

• energy-request-builder-config
• energy-live-data-config
• energy-upload-config
• energy-upload-sql-config

Typical Flow

energy-request-builder
↓
Modbus Flex Getter
↓
energy-value-parser
↓
energy-live-data
↓
energy-store-counter
↓
MySQL
↓
energy-select-pending
↓
MySQL
↓
energy-upload-data

Supported Topics

• currentvalue
• countervalue
• frequency
• apparentpower
• reactivepower

Data Model (example)

{ "deviceId": "machine-001", "topic": "currentvalue", "value": 228.06, "unit": "W", "timestamp": "2026-04-10T11:30:00.000Z" }

Local Database

The package uses a local table (default: EnergyData):

• Counter values
• Calculated diffs
• Upload flags (UploadedSQL, UploadedMES)

The structure can be created using:

msg.topic = "create"

→ send into energy-db-functions

Important Notes

• deviceId is mandatory for most nodes
• Designed for multi-device environments
• Modbus communication is NOT included
  → use external nodes like Modbus Flex Getter
• Time is stored as numeric timestamps (yyyyMMddHHmm)

Target Use Case

This package is designed for:

• Industrial energy monitoring
• MES integration
• Machine-level energy tracking
• Multi-device environments

Powerhouse Solutions GmbH

https://www.powerhouse-solutions.de/