What instruction is used for copying data from one array to another in programming?

The COP instruction is specifically designed for copying data from one array to another within a programming environment, particularly in Rockwell ControlLogix systems. This instruction allows users to transfer a specified number of elements from a source array to a destination array efficiently. It not only handles the transfer of data but can also accommodate different data types and structures, making it versatile in data management.

The COP instruction operates by taking in parameters that define the source and destination arrays along with the count of elements to be copied. As a result, it streamlines the process of replicating block data, thus reducing programming effort and potential errors associated with manual data entry or manipulation.

Other instructions mentioned serve different purposes in programming: for example, the FLL instruction is typically used to fill an array with a constant value, the MOV instruction is meant for moving single data values rather than arrays, and the CLR instruction is utilized for clearing data by resetting elements to a default state. Each of these has its specific use case but does not function as effectively as the COP instruction for the task of copying array data.