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Startup and Maintenance Precautions
● Do not touch any terminal while power is on.
Doing so will cause electric shock.
● Correctly connect the battery connector.
The battery must not be charged, disassembled, heated, thrown into the fire, short-circuited, soldered,
wetted with a liquid or exposed to strong shock.
Doing so will cause the battery to produce heat, explode, or ignite, resulting in injury and fire.
● Shut off the external power supply for the system in all phases before cleaning the module or retightening
the terminal screws or module fixing screws.
Failure to do so may result in electric shock, damage to the module and malfunction.
● 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 (9.85 inches) away in all directions from the programmable controller.
Failure to do so may cause malfunction.
● Shut off the external power supply for the system in all phases 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 the relevant sections in the QCPU User's Manual (Hardware Design, Maintenance and
Inspection) and in the manual for the corresponding module.
● Connection/disconnection of the module to/from the base unit and the extended SRAM cassette and
terminal block to/from the CPU module after the first use of the product shall be limited to 50 times.
(Compliant with JIS B 3502)
Exceeding the limit of 50 times may cause malfunction.
● Connection/disconnection of the SD memory card after the first use of the product shall be limited to 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.
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WARNING
CAUTION
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