In medium voltage networks (e.g., 20 kV), energy providers like EWE Netz GmbH publish annual peak load time windows (HLZ). During these periods, special grid fees apply. The HLZ Controller fully automates this control – autonomous, Git-based, and low-maintenance.

Production facilities with Siemens S7 controllers generate valuable data. But how do you make this data accessible for modern monitoring systems, dashboards, and analytics? The S7 Connector bridges this gap: A middleware solution that connects S7 protocols with MQTT, SparkplugB, and the Unified Namespace (UNS).

Pyrolysis boilers burn biomass highly efficiently – when they run optimally. However, without continuous monitoring, inefficiencies remain invisible: Too low combustion temperatures lead to energy losses, suboptimal oxygen supply results in incomplete combustion. This monitoring system captures over 300 data points per minute from Siemens S7 controllers and transmits them via MQTT and SparkplugB into a Unified Namespace. InfluxDB stores the time-series data, while Grafana dashboards provide real-time visualization and alerting. The result: Transparent operations management, optimized combustion, and centralized administration of multiple facilities across locations.

Technologies Used:

• Siemens S7 PLC
• MQTT & SparkplugB
• InfluxDB & Grafana
• Unified Namespace Architecture
• NodeRED