October 2017
Intermediate to advanced
456 pages
9h 56m
English
Content preview from Industrial Cybersecurity
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Communication protocols in the Industrial zone
In recent years, the Industrial zone has seen a shift from using proprietary OT protocols such as PROFIBUS, DeviceNet, ControlNet, and Modbus to using common IT technologies such as Ethernet and the IP suite protocols. However, a few proprietary protocols and network media can still be found in the lower levels of the ICS systems. The figure below shows where some of these can be found in the ICS architecture, followed with a short description:
- A - Hardwired devices: These are the sensors, actuators, and other devices that use a discrete signal, such as 24 VDC or an analog signal such as 4-20 ...
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