Real Time Automation 435USB-NNBU-D Modbus RTU Slave Gateway Module

Real Time Automation HW260C 435USB-NNBU-D is a USB-based Modbus RTU Slave Gateway Module designed to act as a bridge between Modbus RTU devices and a master controller. Identified by part number 435USB-NNBU-D and built on the NNBU platform, this gateway enables Modbus RTU devices to be polled and controlled by a central master without altering the devices themselves. The 435USB lineage denotes USB connectivity, while the HW260C designation identifies the specific hardware variant within Real Time Automation's gateway family. Typical applications include integrating field devices such as sensors and meters that communicate via Modbus RTU into PLCs or SCADA systems for monitoring, data collection, and control.