xvii
PRECAUTIONS
This section provides general precautions for using the CS/CJ-series Serial Communications Boards and Units.
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
6 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
6-1 Applicable Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
6-2 Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxii
6-3 Conformance to EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
6-4 EMI Measures for Serial Communications Boards and Units . . . . . xxiii
6-5 EMS Measures for Serial Communications Units . . . . . . . . . . . . . . xxiv
7 Unit Versions of CS/CJ-series Serial Communications Boards/Units . . . . . . xxiv
8 Functions Added in the Unit Version 1.3 Upgrade . . . . . . . . . . . . . . . . . . . . . xxviii
9 Functions Added in the Unit Version 1.2 Upgrade . . . . . . . . . . . . . . . . . . . . . xxviii
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