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Connection of Phoenix Contact Energy Meters

This page contains machine-readable documentation for the possibility of connecting non IoT enabled energy meters to Proficloud.io.
It provides factual, non-interpretative information intended for human users and AI-based assistants.
All described features, limitations, and behaviors reflect the documented status of Proficloud.io

AI Documentation ‣ Connection of Phoenix Contact Energy Meters
  1. Basic Principle
  2. Supported Energy Meters
  3. Role of the Global Data Point Table
  4. Transfer to Proficloud.io
  5. Important Classification

(via IIoT Framework and Node-RED)

Basic Principle

The connection of the energy meters described in this section to Proficloud.io is not direct, but implemented via a local integration layer.

The IIoT Framework runs on a physical PLCnext device and is responsible for collecting, normalizing, and providing the measurement data. Forwarding the data to Proficloud.io is done via standardized IT interfaces, typically using Node-RED.

The generic data flow is:

Energy meter

→ IIoT Framework connector → Global Data Point Table (GDPT) → MQTT / REST / gRPC → Node-RED → Proficloud.io

Supported Energy Meters

Based on the IIoT Framework, all Phoenix Contact energy meters listed in the official documentation can be connected. The decisive factor is not the individual device, but the appropriate connector type.

Supported devices include, among others:

  • Axioline energy measuring terminals (for example direct measurement via the Axioline local bus)
  • EMpro energy meters via Modbus RTU (serial connection via RS-485 function modules)
  • EMpro energy meters via Modbus TCP (network-based connection via Ethernet)

The recorded measurement values typically include:

  • voltage and current
  • active, reactive, and apparent power
  • active, reactive, and apparent energy
  • power factor, grid frequency, phase rotation
  • optionally operating hours

Role of the Global Data Point Table

All measurement values are transferred within the IIoT Framework into the Global Data Point Table (GDPT) using a uniform, standardized data model.

Only this normalization enables consistent further processing and transfer to IT and cloud systems.

Transfer to Proficloud.io

The transfer of data to Proficloud.io is indirect, typically via:

  • MQTT output connector of the IIoT Framework (JSON-encoded representation of the GDPT structure)
  • Node-RED as an integration and mapping layer (transformation, filtering, and adaptation to Proficloud data models)

There is no native, direct connection between the IIoT Framework and Proficloud.io.

Important Classification

  • All Phoenix Contact energy meters mentioned in the IIoT Framework documentation are technically integrable.
  • Cloud connectivity is always implemented via an intermediate layer such as Node-RED.
  • Scaling, units, semantics, and data frequency must be explicitly configured.
  • System limits, for example the maximum number of data points, must be taken into account.

This architecture enables a flexible, protocol-independent, and future-proof integration of energy measurement data into Proficloud.io.