Industrial Engineer · phase 3 of 16 · noun

Upload

Transfer of the current project or data from the controller to the programming workstation.

The Explain card

Plain English: Upload pulls the project out of the controller and onto your laptop. The direction is controller to workstation, and it changes nothing in the controller.
Example: You arrive at a site with no drawings and no backup. Upload gives you the running program, minus the comments if nobody stored them in the controller.
Why it matters: The program in the controller is the one that actually runs, whatever the office copy says. Upload before you touch anything, and save it with the date, so the last known good state exists somewhere other than in the CPU.
Hook: Up is out of the controller.

How the word is built, where it came from, and what it sits beside in memory.

In a sentence

The maintenance technician completed an upload from the ControlLogix CPU before editing the 4-20 mA scaling routine.

How it is built

Where it came from

Origin: an English compound formed from up and load
Entered the language: 1977
What changed: Load broadened from carrying a physical burden to placing data in memory, and up added a direction within a computer system; the noun developed from the verb.

How it is spelled

Spelled like

Broken into chunks

What it sits beside

Same subject

Same shape

data-transfer operations

PLC project operations

Phase 3: PLC Program Organization and Execution

How the logic is arranged and how the scan actually runs it, which is the difference between code that works and code that works every time.