Mitsubishi MELSEC-A A2USHCPU-S1 User Manual page 8

CAUTION
When performing online operations (especially, program modification, forced output or operating
status change) by connecting a peripheral device to the running CPU module, read the manual
carefully and ensure the safety.
Incorrect operation will cause mechanical damage or accidents.
Do not disassemble or modify each of modules.
Doing so may cause failure, malfunctions, personal injuries and/or a fire.
When using a wireless communication device such as a mobile phone, keep a distance of 25cm
(9.84inch) or more from the programmable controller in all directions.
Failure to do so may cause malfunctions.
Be sure to shut off all phases of the external power supply used by the system before mounting or
removing the module.
Failure to do so may result in failure or malfunctions of the module.
Do not drop or apply any impact to the battery.
Doing so may damage the battery, resulting in electrolyte spillage inside the battery.
If any impact has been applied, discard the battery and never use it.
Do not mount/remove the module onto/from base unit more than 50 times (IEC61131-2-compliant),
after the first use of the product.
Before handling modules, touch a grounded metal object to discharge the static electricity from the
human body.
Failure to do so may cause failure or malfunctions of the module.
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