Omron CJ1M-CPU21, Operation Manual

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xxi
PRECAUTIONS
This section provides general precautions for using the CJ-series Programmable Controllers (PLCs) and related devices.
The information contained in this section is important for the safe and reliable application of Programmable
Controllers. You must read this section and understand the information contained before attempting to set up or
operate a PLC system.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
6-3 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
6-4 Relay Output Noise Reduction Methods . . . . . . . . . . . . . . . . . . . . . xxix