Siemens SIMATIC 505 Installation And Operation Manual page 2

DANGER indicates an imminently hazardous situation that, if not avoided, will
result in death or serious injury.
DANGER is limited to the most extreme situations.
WARNING indicates a potentially hazardous situation that, if not avoided, could
result in death or serious injury, and/or property damage.
CAUTION indicates a potentially hazardous situation that, if not avoided, could
result in minor or moderate injury, and/or damage to property.
CAUTION is also used for property-damage-only accidents.
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Copyright 1998 by Siemens Energy & Automation, Inc.
All Rights Reserved — Printed in USA
DANGER
WARNING
CAUTION