- USB to RS485 Adapter (RJ45) from EG4 or USB to RS485 Adapter & RJ45 Ethernet cable ( or 3 wires )
- Connect RJ45 ethernet cable to an avaiable RS485/Modbus port:
Example Image
- Connect appropriate wires to USB RS485 Adapter
If using a Raspberry Pi Can Hat, The expected pinout RS485 A/B configuration maybe be reversed.
If you get the following error while using a Raspberry Pi Can Hat swap your A/B wires:
ERROR:.transport_base[transport.0]:<bound method ModbusException.__str__ of ModbusIOException()>
Follow configuration example for ModBus RTU to MQTT https://github.com/HotNoob/PythonProtocolGateway/wiki/Configuration-Examples#modbus-rtu-to-mqtt
protocol_version = eg4_v58
baud = 19200
protocol_version = eg4_3000ehv_v1
protocols may not be limited to the models listed.