E-9
• Configure the circuits to turn ON the power supply to 
the CPU Unit before the 24-V I/O power supply. 
If the power supply to the CPU Unit is turned ON after the 
external power supply, e.g., the 24-V I/O power supply, the 
outputs from the CPU Unit may momentarily turn ON 
when the power supply to the CPU Unit turns ON. This 
can result in unexpected operation that may cause injury or 
device damage.
• Provide emergency stop circuits, interlock circuits, 
limit circuits, and any other required safety measures 
in control circuits outside of the Machine Controller.
There is a risk of injury or device damage.
• If you use MECHATROLINK I/O Modules, use the 
establishment of MECHATROLINK communications 
as an interlock output condition.
There is a risk of device damage.
• Connect the Battery with the correct polarity.
There is a risk of battery damage or explosion.
• Suitable battery replacement must be performed and 
it must be performed only by an experienced techni-
cian.
There is a risk of electrical shock, injury, or device dam-
age.
• Do not touch the electrodes when replacing the Bat-
tery.
Static electricity may damage the electrodes.
CAUTION