Labels for power cables are affixed on only one side of the identification plates. On the labels, there is information (the part after the word "TO:") about the location of the device on the other end of the cable, like the location of control cabinet, distribution box or power socket.
The two sides of the label affixed on the signal cable carry information about the location of the ports connected to both ends of the cable. Figure 1 shows the information on both sides of the labels affixed to the signal cables.
Seen from the cabling end of the equipment, the text part of the label is on the right side of the cable. The side with "TO:" that is facing outside carries the location information of the opposite end; and the other side carries the location information of the local end.
In other words, the information in Area 1 at one end is the same as the information in Area 2 at the other end of the cable.