ATO VFD RS485 control from Node Red

Hello, I'm doing my first step on Modbus protocols, I'm looking for some guidedance / sample code to control the speed of a Fan connected to the VFD, I was trying to configure the node red with modbus but I din't have much lucky, but the VDF using RS485 and a terminal console working with no issues.

any help is much appreciated.

Thanks.

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