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SysTec Weighing Indicators and MQTT Protocols in Operation H.P. Schlenter GmbH operates a recycling facility in Würselen, Germany, where excavated soil, concrete residues, and demolition materials from large construction sites are received and processed. A PFREUNDT WK60 wheel loader scale with a web portal has already been successfully in use for some time. Due to increasing material volumes and the need for consistent and transparent documentation of incoming and outgoing materials at the recycling facility, Schlenter recently commissioned SysTec partner PFREUNDT to build a stationary truck scale. In this new system, the W&M approved SysTec IT3 weighing indicator handles the complete weight acquisition of the truck scale. It processes weighing signals, controls the weight display, and serves as the interface between the scale and the PFREUNDT web portal. Weighing operations are carried out via the web portal in both manual and self-service modes. The Process The process begins with the creation of a master order in the