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5
E3X-DRT21-S
User’s Manual
Intro
duc
tion
Introduction
Meanings of Signal Words
The following signal words are used in this manual.
The following alert statements apply to the products in this manual. Each alert statement also
appears at the locations needed in this manual to attract your attention.
Meanings of Signal Words
Indicates a potentially hazardous situation which, if not avoided, will
result in minor or moderate injury, or may result in serious injury or
death. Additionally there may be significant property damage.
Alert statements in this Manual
Configure the safety circuits, such as emergency stop circuits, interlock circuits, and limit
circuits, with external control circuits in order to remain the safety of the entire system when
a failure due to a product failure or an external factor occurs. If not, the failure may cause a
serious incident.