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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: " CAUTION" and " WARNING".
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
● Outputs may remain on or off due to a failure of a component such as a transistor in an output circuit.
Configure an external circuit for monitoring output signals that could cause a serious accident.
● Do not write any data to the "system area" and "write-protect area" (R) of the buffer memory in the
intelligent function module. Also, do not use any "use prohibited" signal as an input or output signal
from the intelligent function module to the programmable controller CPU.
Doing so may cause malfunction of the programmable controller system.
CAUTION
● Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 100mm or more between them.
Failure to do so may result in malfunction due to noise.
WARNING
CAUTION
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.