Display and Calculation of Epoch time

Display and Calculation of Epoch time

Hi all,
I am working with inverter's signal list. Some of them are Start-up time and shutdown time that have datatype of "Epoch second" (number of seconds since 1/1/1970 0:0:0). The driver is Modbus, so using UDINT for time with "Epoch second" type is reasonable

Can you suggest me any solution / logic function or anything else to convert these data to Date_and_time (IEC) Datatype in  Zenon, then I can display on screens and in reports, export data from Historian