Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

20 Questions

1 Views

Modbus Communication Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which protocol is widely used in modern SCADA systems?

IEC 104 (correct)

IEC 101

Modbus TCP

TCP/IP

What is the reserved TCP port for IEC 104 protocol?

101

104

60870

2404 (correct)

What does a Modbus client use to communicate a specific task to a Modbus server?

Function codes (correct)

Exception codes

Memory type

TCP/IP

Which of the following is an example of a common exception code used by a Modbus server?

02; Bad memory address Signup and view all the answers

What does IEC 104 protocol extend from?

IEC 101 protocol Signup and view all the answers

In a Modbus transaction, what can be included?

Single item or multiple items Signup and view all the answers

What memory type can a Modbus client write to or read from?

Specific memory type Signup and view all the answers

What is the purpose of function codes in Modbus communication?

Communicate a specific task to the Modbus server Signup and view all the answers

What did the server indicate with the exception code 01-1 in Modbus communication?

Don't understand this function code Signup and view all the answers

What is the primary task of the Modbus primary in communication with the Modbus secondary?

Communicate a specific task Signup and view all the answers

What is the port number used by IEC 104 protocol for TCP communication?

2404 Signup and view all the answers

What is the main purpose of IEC 104 protocol?

Transport IEC 101 telecontrol messages over TCP Signup and view all the answers

Which region primarily uses DNP3 protocol?

USA Signup and view all the answers

What is the maximum number of objects that can be transmitted in each ASDU of IEC 104 protocol?

127 Signup and view all the answers

What does the Application Protocol Control Information (APCI) of IEC 104 protocol consist of?

Header with protocol control information Signup and view all the answers

Which protocol is the IEC 104 protocol built on top of?

IEC 101 Signup and view all the answers

What is the biggest advantage of IEC 104 protocol?

Enables communication through a standard network for simultaneous data transmission Signup and view all the answers

What is the maximum number of APDUs that can be carried in each TCP payload of IEC 104 protocol?

Depends on the TCP maximum segment size (MSS) Signup and view all the answers

What is the fixed length of the data unit identifier in each ASDU of IEC 104 protocol?

Six bytes Signup and view all the answers

What type of network protocol is IEC 104 protocol?

IP-compliant network protocol Signup and view all the answers