3
[Design Precautions]
[Security Precautions]
[Installation Precautions]
CAUTION
● Do not bundle the control line and communication cables together with or lay them close to the main
circuit or power line. Keep a distance of 100mm or more between them. Failure to do so may result in
malfunction due to noise.
● Simultaneously turn on and off the power supplies of the CPU module and extension modules.
WARNING
● To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from unreliable networks and devices via the network, take appropriate measures such
as firewalls, virtual private networks (VPNs), and antivirus solutions.
WARNING
● Make sure to cut off all phases of the power supply externally before attempting installation or wiring
work. Failure to do so may cause electric shock or damage to the product.
● Use the product within the generic environment specifications described in the User's Manual
(Hardware) of the CPU module used.
Never use the product in areas with excessive dust, oily smoke, conductive dusts, corrosive gas (salt
air, Cl
2
, H
2
S, SO
2
or NO
2
), flammable gas, vibration or impacts, or expose it to high temperature,
condensation, or rain and wind.
If the product is used in such conditions, electric shock, fire, malfunctions, deterioration or damage
may occur.
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