Stage 10 · Acknowledge is not reset · 8 min
Acknowledge the horn, retain the alarm
I can separate a condition, a latched alarm and its horn.
1. Why it matters
An operator needs to silence a horn while they check a high tank level. If that also hid the warning, the tank could overflow without anyone noticing.
The rest of this lesson is part of ProTry the full course, every mission and the expert challenges free for 7 days. No card needed.
- The idea in plain words
- See it happen, scan by scan, in Siemens and Rockwell
- Vendor notes
- On site
- Try it on the rig
- Check your understanding