The source of a move instruction contains the address where the instruction sends a copy of the data.

Move Instruction

A programmable logic controller instruction that moves data from one location to another. Although a move instruction typically places the data in a new location, the original data still reside in their original location.

Source

The origin or starting point of something, such as a signal in an electronic system or data in computing.

Address

A code that indicates the location of data to be used by a program, or the location of additional program instructions.