Stage 11 · Hand control over · 8 min
Who controls the command?
I can switch Auto and Manual without an unexplained command change.
1. Why it matters
An engineer switches a filling pump to Manual to test it. Flicking that switch alone must not start a pump that is off, or stop one that is filling.
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- 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