However, the Port 502 can not be used for the server unless your Android device is rooted (Android Operating system blocks many ports below 1024). Most commonly, this will be setup as port number 502. This is done in the Preference screen in the "Settings" menu. The same Modbus Monitor points list is shared during both Master and Slave operation (saving data entry steps).įirst setup the Modbus TCP with the correct server port.
Other items in the list without the "Modbus TCP" protocol are ignored. In other words, only Modbus Monitor point with "Modbus TCP" protocol selection will work and do the correct things during server mode. Other protocol and physical medium are not designed to work in the Server/Slave mode of operation. Yes, the Server only talks Modbus TCP protocols.
The Server mode of the app turns your Android device into the Modbus TCP Slave (server).
#Free modbus server how to
The YouTube video also shows how to use this feature. The benefits of Modbus Server can be found in the FAQ page. The Modbus Master Mode is explained in the Modbus Master Page. Technically this mode can be split into new "Modbus Server Android App", but it was decided to add as an option to the main app for convenience and ease of use. The Modbus Monitor Advanced app have many modes of operation known as a Master Mode (Client) and Slave (Server) Mode.