Little-endian lists the bytes with increasing significance and big-endian lists them with decreasing significance.
In the little-endian format, the least significant byte is stored first. In the big-endian format, the largest byte is first stored.
Little-endian is low-to-high; which means right to left.
Big-endian is high-to-low; that means left to right.
Click here to find further information regarding this topic.
Thus, the term hex belongs to big-endian and reverse hex to little-endian.
hex: (high-to-low) - 33FACC00
reverse hex: (low-to-high) - 00CCFA33
33 FA CC 00
00 00 0F 11
Please make sure that you encode be.ENERGISED big-endian by default. Otherwise you will have problems with roaming networks.