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• SAFETY PRECAUTIONS •
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full
attention to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of
the programmable controller system, refer to the user's manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: "
WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under "
CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
[Design Precautions]
WARNING
• Do not write any data to the "system area" of the buffer memory in the intelligent function
module.
Doing so may cause malfunction of the programmable controller system.
• Outputs may remain on or off due to a failure of the external output transistor. Configure an
external circuit for monitoring output signals that could cause a serious accident.
CAUTION
• Do not install the control lines or communication cables together with the main circuit lines or
power cables.
Keep a distance of 150 mm (5.9 inch) or more between them.
Failure to do so may result in malfunction due to noise.