6 
3.  Precautions 
 
(1)  Understand the specifications of devices that are used in the system. Allow some margin 
for ratings and performance. Provide safety measures, such as for installing a safety 
circuit, in order to ensure safety and minimize the risk of abnormal occurrences. 
(2)  To ensure system safety, always read and follow the information provided in all Safety 
Precautions and Precautions for Safe Use in the manuals for each device that is used in 
the system. 
(3)  The user is encouraged to confirm the standards and regulations that the system must 
conform to. 
(4)  It is prohibited to copy, reproduce, or distribute all or part of this document without the 
permission of OMRON Corporation. 
(5)  The information contained in this document is current as of September 2022.   
It is subject to change without prior notice for improvement purposes. 
 
The following notations are used in this document. 
 
Indicates a potentially hazardous situation which, if not avoided, 
may result in minor or moderate injury, or may result in serious 
injury or death. Additionally, there may be severe property 
damage. 
 
Indicates a potentially hazardous situation which, if not avoided, 
may result in minor or moderate injury, or property damage. 
 
Precautions for Correct Use 
Precautions on what to do and what not to do to ensure correct operation and performance. 
 
Additional information to read as required. 
This information is provided to increase understanding or make operations easier. 
 
The filled circle symbol indicates operations that you must carry out. 
The specific operation is shown in the circle and explained in text. 
This example indicates a “general precaution” for something that you must 
carry out.