Mitsubishi Electric Q26UD(E)HCPU User Manual page 7

[Startup and Maintenance Precautions]
● Do not touch any terminal while power is on. Doing so will cause electric shock.
● Correctly connect the battery connector. Do not charge, disassemble, heat, short-circuit, solder, or
throw the battery into the fire, or apply liquid or a strong shock to the battery. Doing so will cause the
battery to produce heat, explode, ignite, or liquid spill, resulting in injury and fire.
● Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal screws, connector screws, or module fixing screws. Failure to do so may
result in electric shock or cause the module to fail or malfunction.
[Startup and Maintenance Precautions]
● Before performing online operations (especially, program modification, forced output, and operation
status change) for the running CPU module from the peripheral connected, read relevant manuals
carefully and ensure the safety. Improper operation may damage machines or cause accidents.
● Do not disassemble or modify the modules. Doing so may cause failure, malfunction, injury, or a fire.
● Use any radio communication device such as a cellular phone or PHS (Personal Handy-phone
System) more than 25cm away in all directions from the programmable controller. Failure to do so
may cause malfunction.
● Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may cause the module to fail or malfunction. A module can be replaced
online (while power is on) on any MELSECNET/H remote I/O station or in the system where a CPU
module supporting the online module change function is used. Note that there are restrictions on the
modules that can be replaced online, and each module has its predetermined replacement procedure.
For details, refer to this manual and the manual for the corresponding module.
● After the first use of the product, do not mount/remove the module to/from the base unit, the extended
SRAM cassette to/from the CPU module, or the terminal block to/from the module more than 50 times
(IEC 61131-2 compliant) respectively. Exceeding the limit of 50 times may cause malfunction.
● After the first use of the product, do not mount/remove the SD memory card more than 500 times.
Exceeding the limit of 500 times may cause malfunction.
● Do not drop or apply shock to the battery to be installed in the module. Doing so may damage the
battery, causing the battery fluid to leak inside the battery. If the battery is dropped or any shock is
applied to it, dispose of it without using.
● Before handling the module, touch a grounded metal object to discharge the static electricity from the
human body. Failure to do so may cause the module to fail or malfunction.
WARNING
CAUTION
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