PV Communicator UNI V3.0
The communication core of the MeterBridge system
Connects the LoRa radio bridge to the PV inverter while preserving standard RS485 / Modbus RTU communication.
Transparent RS485 / Modbus RTU connection
PV Communicator UNI V3.0 is a communication module designed to connect the MeterBridge LoRa radio system to the PV inverter. It provides transparent RS485 / Modbus RTU communication between the remote Smart Meter and the inverter without changing the communication protocol.
Smart MODBUS Learning
UNI V3.0 can learn the actual communication between the PV inverter and the Smart Meter and create a communication profile from it. This means it is not limited to a single inverter or Smart Meter type predefined by the manufacturer.
The current version supports MODBUS RTU communication using function FC3 (Read Holding Registers) at 9600 Bd, 8N1. The compatibility of a specific device combination can be verified before deployment.
Easy integration into an existing installation
On the PV inverter side, the PV Communicator connects directly to its RS485 communication interface. The second RS485 interface is used to connect the LoRa radio. For both the inverter and the Smart Meter, standard RS485 / Modbus RTU communication is preserved, while wireless transmission is provided by the MeterBridge system.
Interfaces and functions
PV Communicator UNI V3.0 integrates the communication and power interfaces required to connect the LoRa radio and the PV inverter into a single compact module.
Two independent RS485 interfaces
One RS485 interface is used for communication with the PV inverter, while the second connects the LoRa radio. PV Communicator transfers communication between the two interfaces through the MeterBridge wireless link.
Common power supply on the PV inverter side
PV Communicator is powered by the 5 V DC adapter supplied with the LoRa radio. It also supplies power to the connected LoRa radio, so both the PV Communicator and the LoRa radio are powered from a single power adapter.
Transparent Modbus RTU transmission
Communication remains in RS485 / Modbus RTU format on both sides. Together with the LoRa radios, PV Communicator creates a communication bridge without requiring any change to the Smart Meter or PV inverter protocol.