Industrial Engineer · phase 3 of 16 · noun
Force
Temporary override that commands an I/O point or tag to a selected state for testing and troubleshooting.
The Explain card
- Plain English
- A force overrides an I/O point to a value you choose, whatever the field wiring or the logic says. It is a troubleshooting tool that lives outside the program.
- Example
- A sensor is broken and the part is on order. A technician forces the input on so the line can run, and tapes a note to the panel.
- Why it matters
- Forces are invisible in the code, so a forced input makes logic look right while the machine runs blind. A force left on after the repair is how a press runs with its guard bypassed. Most controllers flash a light when any force is active, and that light means find it.
- Hook
- Useful for an hour, dangerous for a week.
Word knowledge
How the word is built, where it came from, and what it sits beside in memory.
In a sentence
During commissioning, the technician applied a Force to the motor starter output, verified contactor operation, and cleared it before automatic control resumed.
How it is built
- force base strength or power
Where it came from
- Origin
- Old French force, from Latin fortia, meaning strength
- Entered the language
- 13th century
- What changed
- The sense broadened from bodily strength to compulsion, influence, and specialized technical uses.
How it is spelled
- Pattern
- The letter c before final e represents the soft sound /s/.
- Pattern
- The final e is silent.
- Breaks the pattern
- The final e does not mark a long vowel because the preceding vowel is influenced by r.
Spelled like
- face
- trace
- space
Broken into chunks
-
force
- forceful
- enforce
- reinforce
What it sits beside
Same subject
- force table
- I/O point
- PLC output
- commissioning
Same shape
- enforce
- reinforce
PLC commissioning tools
- force table
- watch table
- online monitor
Where it sits in the deck
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.
