Mitsubishi MELSEC-A Series Reference Manual page 5

[SETUP AND MAINTENANCE PRECAUTIONS]
Please read this manual thoroughly and confirm the safety before starting online operations
(especially, program modifications, forced outputs, and operating status modifications), which are
performed by connecting the GX Developer via the MELSECNET network system to a running CPU
module of other station.
Performing incorrect online operations may damage the machinery or result in accidents.
Never disassemble or modify the module.
This may cause breakdowns, malfunctions, injuries or fire.
Use any radio communication device such as a cellular phone or a PHS phone more than 25cm
(9.85 inch) away in all directions of the programmable controller.
Not doing so can cause a malfunction.
Shut off all phases of the external power supply in the system before mounting or dismounting the
module. Failure to do so may cause failure or malfunction of the module.
Do not touch the terminals while the power is on.
Doing so may cause malfunctions.
Shut off all phases of the external power supply in the system before cleaning or retightening the
terminal screws or module fixing screws.
Not doing so may cause failure or malfunction of the module.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damages to the screws and/or the module,
resulting in fall out, short circuits or malfunction.
Before touching the module, be sure to touch grounded metal, etc. to discharge static electricity from
human body, etc.
Failure to do so may cause the module to fail or malfunction.
[DISPOSAL PRECAUTIONS]
When disposing of this product, treat it as industrial waste.
CAUTION
CAUTION
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