Mitsubishi Electric Q80BD-J61BT11N, User Manual

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
SAFETY PRECAUTIONS

(Be sure to read these instructions before using the product.)
Before using this product, read this manual and the relevant manuals introduced in this manual carefully
and handle the product correctly with full attention to safety.
Note that these precautions apply only to this product. Refer to the user's manual of the CPU module for
safety precautions on programmable controller systems.
In this manual, the safety instructions are ranked as "
WARNING " and " CAUTION".
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.
Note that failure to observe the ! CAUTION level instructions may also lead to serious results
depending on the circumstances.
Be sure to observe the instructions of both levels to ensure personal safety.
Please keep this manual in accessible place and be sure to forward it to the end user.
[DESIGN PRECAUTIONS]
!
WARNING

For details on the operating status of each station when a communication problem occurs in the
data link, refer to Section 6.5 of this manual.

If a cable dedicated to the CC-Link is disconnected, this may destabilize the line, and a data link
communication error may occur in multiple stations. Make sure to create an interlock circuit in
the sequence program so that the system will operate safely even if the above error occurs.
Failure to do so may result in a serous accident due to faulty output or malfunctions.

When performing the control of the personal computer in operation (changing data), configure
an interlock circuit in a user program so the safety of the overall system is always maintained.
When performing other controls of the personal computer in operation (changing program and
operation status (status control)), read this manual carefully and confirm if the overall safety is
maintained.
Especially, when this control is performed to a remote personal computer from an external
device, problems that have occurred on the personal computer side may not be able to
immediately be handled if there is a data communication error.
Define a troubleshooting agreement between external devices and the personal computer for
data communication error occurrences, as well as construct an interlock circuit in the user
program.

Do not write any data from the user program into the "system area" of the board buffer memory.
Writing data into the "system area" may cause a CC-Link system malfunction.

A failure in the board may cause remote I/O not to turn on or off correctly.
For critical I/O signals that may cause a serious accident, establish a circuit to externally monitor
them.