What describes the input, output and logic expression memory addressing structure of the PLC, with tag names used to describe addresses?

• A. Data Tables
• B. Address Notation & Tag Names
• C. Memory Map
• D. I/O Configuration

Answer: (B)

The concept being tested is how PLC programs refer to data using symbolic tag names alongside a clear addressing notation. In a PLC, each input, memory bit, or output has a memory location, but programmers work with human-friendly names called tags. The addressing structure combines how you write the address (notation) with the tag that identifies the location in memory, so logic expressions use tag names rather than raw numbers. This makes programs easier to read, troubleshoot, and reuse across different hardware setups. The other terms don’t capture this combination of address writing and symbolic naming: data tables are general data storage, a memory map shows fixed hardware addresses without emphasizing tag-based naming, and I/O configuration focuses on wiring rather than how software addresses data with tags.