How to derive the ip address from MAC address of a new Twido PLC ?

MAC Address: Each Twido TWDLC•E40DRF controller has its own factory-set MAC address that is a worldwide-unique 48-bit address assigned to each Ethernet device.

Default IP Address: The default Ethernet interface IP address of the Twido controller is derived from its unique MAC address.

The default IP address expressed in dotted decimal notation is defined as follows:

085.016.xxx.yyy, where:

For example, the IP address derived from the hexadecimal MAC address 00.80.F4.81.01.11 is 085.016.001.17.