What is a tag in PLC terminology?

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Multiple Choice

What is a tag in PLC terminology?

Explanation:
In PLC programming, a tag is a symbolic name assigned to a memory location inside the PLC. This naming lets you refer to inputs, outputs, and internal data (like timers, counters, or data blocks) with meaningful, readable names instead of raw addresses. When you create a tag, you map that name to a specific data bit or register, and you use the tag in your ladder logic or other languages to read or write that value. Tags aren’t physical devices, nor a type of I/O module, and they aren’t a programming language—they’re a convenient naming convention for the PLC’s data storage.

In PLC programming, a tag is a symbolic name assigned to a memory location inside the PLC. This naming lets you refer to inputs, outputs, and internal data (like timers, counters, or data blocks) with meaningful, readable names instead of raw addresses. When you create a tag, you map that name to a specific data bit or register, and you use the tag in your ladder logic or other languages to read or write that value. Tags aren’t physical devices, nor a type of I/O module, and they aren’t a programming language—they’re a convenient naming convention for the PLC’s data storage.

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