Safety Precautions - Mitsubishi MELSEC Q Series User Manual

Before using this product, please read this manual and the relevant manuals introduced in this manual
carefully and pay full attention to safety to handle the product correctly.
The instructions given in this manual are concerned with this product. For the safety instructions of the
programmable controller system, please read the user's manual for the CPU module to use.
In this manual, the safety instructions are ranked as "
Note that the CAUTION level may lead to a serious consequence according to the circumstances.
!
Always follow the instructions of both levels because they are important to personal safety.
Please store this manual in a safe place and make it accessible when required. Always forward it to the
end user.
[DESIGN PRECAUTION]
 Do not write data into the "system area" of the buffer memory of intelligent function modules.
Also, do not use any "prohibited to use" signals as an output signal to an intelligent function
module from the programmable controller CPU.
Writing data into the "system area" or outputting a signal for "prohibited to use" may cause a
programmable controller system malfunction.
 Do not bunch the control wires or communication cables with the main circuit or power wires, or
install them close to each other.
They should be installed 100mm(3.9inch) or more from each other.
Not doing so could result in noise that may cause malfunction.
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 SAFETY PRECAUTIONS 
(Always read these instructions before using this equipment.)
!
WARNING" and "
WARNING
!
CAUTION
!
!
CAUTION".
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