Internal Tags store information about which of the following?

Internal Tags store information about which of the following?

• A. External devices' status.
• B. Operating status of the PLC or condition of instructions.
• C. Memory maps.
• D. Program steps.

Answer: (B)

Internal Tags hold data the PLC uses to track its own operation. They store information about the PLC’s operating status and the condition of instructions—things like the run/stop state, the results of logic, and various status flags or bits that indicate what the program is doing at any moment. This internal storage lets the PLC react based on its current state without relying on external devices. What a field device is doing is captured by I/O tags tied to inputs and outputs, not the internal tags. Memory maps describe how memory is laid out, not the live status values, and program steps are the sequence of the program, not ongoing internal state stored in these tags.

Internal Tags hold data the PLC uses to track its own operation. They store information about the PLC’s operating status and the condition of instructions—things like the run/stop state, the results of logic, and various status flags or bits that indicate what the program is doing at any moment. This internal storage lets the PLC react based on its current state without relying on external devices. What a field device is doing is captured by I/O tags tied to inputs and outputs, not the internal tags. Memory maps describe how memory is laid out, not the live status values, and program steps are the sequence of the program, not ongoing internal state stored in these tags.