The MAC ID of the TCSEGPA23F14F (Profibus Remote Master module) is 00.80.F4.FF.08.02 what is the default IP address of PRM module.
The default IP address syntax of PRM module is 10.10.XXX.YYY
Where XXX and YYY are the last two bytes of MAC address and can be achieved by converting the last two bytes of MAC address from Hexadecimal to decimal.
So in above case the IP address would be 10.10.08.02.
Note that the default IP can be triggered by using Clear IP as shown below.