Industrial Engineer · phase 4 of 16
Alias Tag
Alternate tag name that references another tag or hardware-defined point.
The Explain card
- Plain English
- An alias is a second name that points at an existing tag or a hardware point. Reading or writing the alias reads or writes the thing behind it.
- Example
- The physical input in slot 2, point 5 has an ugly hardware name. An alias called Hopper_Empty points at it, and the program uses the readable name everywhere.
- Why it matters
- Aliases let the wiring change without editing the logic. Move the sensor to a different card, repoint one alias, and every rung that used Hopper_Empty follows without being touched.
- Hook
- A nickname for a wire.
Where it sits in the deck
Phase 4: PLC Memory, Tags, and Instructions
The data a program moves and the instructions that move it, from a single true or false value up to a structured array.
