Omron 3G8F7-CRM21 User Manual page 5

Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can result in injury to people or
damage to property.
Indicates an imminently hazardous situation which, if not avoided, will result in death or
DANGER
serious injury. Additionally, there may be severe property damage.
Indicates a potentially hazardous situation which, if not avoided, could result in death or
WARNING
serious injury. Additionally, there may be severe property damage.
Caution
Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury, or property damage.
OMRON Product References
All OMRON products are capitalized in this manual. The word "Unit" is also capitalized when it refers to
an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation "Ch," which appears in some parts of this manual and on some displays and on
OMRON products, has two meanings which must be distinguished in context. In one case, it means
"word" as an aggregation of data, and is abbreviated "Wd". In other case, it refers to a physical input or
output channel. In latter case, when a model has two input channels, they are referred to as Input 1
and Input 2.
The abbreviation "PC" refers to personal computers while "PLC" means Programmable Controller.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
Precautions for Safe Use
Precautions for Correct Use
1,2,3...
Supplementary comments on what to do or avoid doing, to use the product
safely
Supplementary comments on what to do or avoid doing, to prevent failure to
operate, or undesirable effect on product performance
Note Notes in the document refer to equivalent content to the Precautions for
Correct Use or to Precautions for Safe Use.
It also indicates information of particular interest for efficient and convenient
operation of the product.
1. Indicates lists of one sort or another, such as procedures, checklists, etc.
v