what if you use as Hostname 0.0.0.0
read this thread
also you can check the modbus Server examples from
Import > Examples > node-red-contrib-modbus > Modbus-Buffer-Server
what if you use as Hostname 0.0.0.0
read this thread
also you can check the modbus Server examples from
Import > Examples > node-red-contrib-modbus > Modbus-Buffer-Server