Which instruction is used to copy the contents of PLC memory tags?

The instruction used to copy the contents of PLC memory tags is the data transfer instruction. This instruction is essential for moving information from one memory location to another within the programmable logic controller (PLC). Data transfer instructions allow for the manipulation and organization of data by enabling users to duplicate or relocate the values stored in memory tags. This process is fundamental in programming, as it allows for effective data handling, making it easier for the PLC to operate according to the defined control logic.

This capability is crucial in many applications, such as updating status registers, managing inputs and outputs, or moving data between different types of memory. The flexibility of data transfer instructions enhances the overall functionality of the PLC in automating processes and responding to real-time conditions.