GitHub - sofkaski/node-red-contrib-modbus-rtu: Node-RED abstraction of Modbus with RTU protocol
Installation node Modbus TCP Node Red - PDAControl
GitHub - jmajerus/node-red-contrib-modbus-serial: Modbus subset RTU commands for 2 & 4 channel RS485 Relay PLC Controller UART Serial port Switch
Course - Develop your Scada Application based on NodeRED (To Chapter #5) | Arduino based PLC Controller for Industrial Applications by Industrial Shields
AN32 Node-RED example of Modbus / TCP communication with NETIO 4x / PowerCable | NETIO products: Smart power sockets controlled over LAN and WiFi