2.2 Equipment damage due to electric elds or electrostatic discharge
Electrostatic sensitive devices (ESD) are individual components, integrated circuits, modules or 
devices that may be damaged by either electric elds or electrostatic discharge.
NOTICE
Equipment damage due to electric elds or electrostatic discharge
Electric elds or electrostatic discharge can cause malfunctions through damaged individual 
components, integrated circuits, modules or devices.
• Only pack, store, transport and send electronic components, modules or devices in their 
original packaging or in other suitable materials, e.g conductive foam rubber of aluminum 
foil.
• Only touch components, modules and devices when you are grounded by one of the 
following methods:
– Wearing an ESD wrist strap
– Wearing ESD shoes or ESD grounding straps in ESD areas with conductive ooring
• Only place electronic components, modules or devices on conductive surfaces (table with 
ESD surface, conductive ESD foam, ESD packaging, ESD transport container).
2.3 Warranty and liability for application examples
Application examples are not binding and do not claim to be complete regarding conguration, 
equipment or any eventuality which may arise. Application examples do not represent specic 
customer solutions, but are only intended to provide support for typical tasks.
As the user you yourself are responsible for ensuring that the products described are operated 
correctly. Application examples do not relieve you of your responsibility for safe handling when 
using, installing, operating and maintaining the equipment.
2.4 Security information
Siemens provides products and solutions with industrial security functions that support the 
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is necessary 
to implement – and continuously maintain – a holistic, state-of-the-art industrial security 
concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems, 
machines and networks. Such systems, machines and components should only be connected to 
an enterprise network or the internet if and to the extent such a connection is necessary and only 
when appropriate security measures (e.g. rewalls and/or network segmentation) are in place.
For additional information on industrial security measures that may be implemented, please 
visit 
https://www.siemens.com/industrialsecurity (https://www.siemens.com/industrialsecurity). 
Fundamental safety instructions
2.4 Security information
ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA 27