MODBUS, 1 – Wire, RS485, Pulse, Analog
The Sensor Hub is a universal data collection and transfer module running on the NB-IOT network.
The NB-IOT Sensor Hub is a data concentrator from probes, sensors or facilities connected via different protocols. RS485, MODBUS RTU, 1-Wire, or simply via Analog or Digital inputs. It allows you to configure the frequency at which data is read, and stored locally, and the frequency at which data is transmitted to your application, using the NB-IOT (LTE) network, as JSON documents sent in MQTT .
MODBUS RTU to NB-IOT converter

MODBUS is the most widely used standard communication protocol in the industry, for the supervision of industrial equipment. This is a data bus in which a “Master” can supervise and acquire “Slave” equipment data. MODBUS allows the exchange of data, either on Ethernet or on a Serial Port. MODBUS RTU is the communication specification via a serial port (RS485).
The NB-IOT Sensor HUB can read, store and transfer 10 “input registers” MODBUS in MQTT through the NB-IOT network.