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Eccouncil Exam ICS-SCADA Topic 8 Question 30 Discussion
Actual exam question for
Eccouncil's
ICS-SCADA exam
Question #: 30
Topic #: 8
[All ICS-SCADA Questions]
Topic #: 8
What type of communication protocol does Modbus RTU use?
Suggested Answer:
C
Modbus RTU (Remote Terminal Unit) is a communication protocol based on a master-slave architecture that uses serial communication. It is one of the earliest communication protocols developed for devices connected over serial lines. Modbus RTU packets are transmitted in a binary format over serial lines such as RS-485 or RS-232. Reference:
Modbus Organization, 'MODBUS over Serial Line Specification and Implementation Guide V1.02'.
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