Eneffen — BACnet/Modbus gateways with Google Cloud IoT uplink

Building-protocol routing and data publishing to Google Cloud IoT, for international corporate campuses.

The context

Eneffen Technologies is a building-automation integrator whose projects combine legacy BMS protocols (BACnet, Modbus) with modern cloud platforms, at large scale — including international corporate campuses.

Visit eneffen.com

The need

  • Native routing between BACnet and Modbus, in RTU as well as TCP, with no intermediate hardware.
  • Real-time uplink of operational data to Google Cloud IoT, for centralised analysis and supervision.
  • Sauter AG compliance — the BMS vendor on the project — meaning a gateway shipped under the Sauter label.

The solution deployed

Eneffen relies on the Sauter EY-GT485F002 and EY-GT485F099 gateways — the OEM version of our WBox S485. Same hardware, same firmware, same Weble drivers:

  • BACnet Driver — communicates with the Sauter BMS and the building’s BACnet equipment.
  • Modbus Driver — industrial equipment over Modbus RTU and Modbus TCP.
  • Native BACnet ⇄ Modbus routing — Weble’s routing table transports any data from one bus to the other, with no intermediate hardware.
  • Google Cloud IoT Driver — direct publishing of operational data to Google Cloud IoT, for Google’s campuses in India.

The benefit

  • Hardware standardisation under the Sauter label, fitting into customers’ ecosystems without friction.
  • Single stack: one piece of hardware does both local routing and cloud uplink — no extra middleware to maintain.
  • Data sovereignty: the gateway aggregates and filters locally before publishing, so what leaves the site is controlled.
  • International scale: identical deployment on every site, centrally manageable.