Verderflex® Vantage 5000 Modbus® Misc. Hardware Modbus The new Modbus® RTU version of the Verderflex® Vantage 5000 peristaltic pump brings easier system integration and real time communication to form a sophisticated, remotely operated pumping network. Modbus® RTU is a simple, stable, globally used, open data communications protocol with over 7 million active nodes or connection points in use in North America and Europe. It allows a single master controller, such as a PLC, to easily work with multiple, uniquely addressed Verderflex Vantage 5000 pumps in digitally controlled, high resolution dosing or metering systems.