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Before using this product, please read this handbook and the relevant manuals introduced in this handbook
carefully and pay full attention to safety to handle the product correctly.
The precautions given in this handbook 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
CAUTION
Under some circumstances, failure to observe the precautions given under "
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 handbook and then keep the handbook in a safe place for future
reference.
[Design Precautions]
● For the operating status of each station after a communication failure, refer to the manuals for the
stations used.
Incorrect output or malfunction due to a communication failure may result in an accident.
● When connecting a peripheral with the CPU module or connecting a personal computer with an
intelligent function module to modify data of a running programmable controller, configure an
interlock circuit in the program to ensure that the entire system will always operate safely.
For other forms of control (such as program modification or operating status change) of a running
programmable controller, read the relevant manuals carefully and ensure that the operation is safe
before proceeding.
Especially, when a remote programmable controller is controlled by an external device, immediate
action cannot be taken if a problem occurs in the programmable controller due to a communication
failure.
To prevent this, configure an interlock circuit in the program, and determine corrective actions to be
taken between the external device and CPU module in case of a communication failure.
● Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signal as an output signal from the CPU module to the
intelligent function module.
Doing so may cause malfunction of the programmable controller system.
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
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.
WARNING
WARNING" and "
CAUTION".
CAUTION" may lead to
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