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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.
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
When controlling (changing data, program or operation status (remote RUN/
STOP) in particular) a PLC while it is running via a device such as a personal
computer connected to the special function module, configure an interlock
circuit in the sequence program so that the safety of the overall system is
always maintained.
Especially, when performing the above control for a remote PLC from an
external device, troubles occurring on the PLC side due to data
communication error may not be handled immediately.
Determine error handling methods between the external device and the PLC
CPU for when data communication errors occur, in addition to configuring a
interlock circuit in the sequence program.
WARNING
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.
CAUTION
