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Questions and Answers
What is the reserved port for Modbus TCP?
What is the reserved port for Modbus TCP?
- Port 8080
- Port 502 (correct)
- Port 8000
- Port 80
When was the Modbus protocol originally published?
When was the Modbus protocol originally published?
- 1979 (correct)
- 1965
- 1995
- 1985
What does Modbus TCP/IP refer to?
What does Modbus TCP/IP refer to?
- Modbus protocol with a TCP interface (correct)
- Modbus protocol with a UDP interface
- Modbus protocol with both TCP and IP interfaces
- Modbus protocol with an IP interface
What is the purpose of Modbus protocol?
What is the purpose of Modbus protocol?
Which company originally published the Modbus protocol?
Which company originally published the Modbus protocol?
What does RTU stand for in Modbus RTU protocol?
What does RTU stand for in Modbus RTU protocol?
In which industry is Modbus often used to connect a system supervisory computer with an RTU?
In which industry is Modbus often used to connect a system supervisory computer with an RTU?
What does Modbus TCP/IP define?
What does Modbus TCP/IP define?
What is a common means of connecting industrial electronic devices?
What is a common means of connecting industrial electronic devices?
What is the application protocol that defines the rules for organizing and interpreting the data in Modbus?
What is the application protocol that defines the rules for organizing and interpreting the data in Modbus?
What does Modbus support communication to and from?
What does Modbus support communication to and from?
What is a typical use of Modbus in SCADA systems?
What is a typical use of Modbus in SCADA systems?
What is the reserved system port for accessing Modbus on the TCP/IP stack?
What is the reserved system port for accessing Modbus on the TCP/IP stack?
What is the name for a single physical output in Modbus?
What is the name for a single physical output in Modbus?
What is the Modbus function code used for reading an input/output port?
What is the Modbus function code used for reading an input/output port?
Which type of Modbus memory object consists of digital inputs?
Which type of Modbus memory object consists of digital inputs?
What is the address type for analog outputs in Modbus?
What is the address type for analog outputs in Modbus?
How many extra bytes does the M-BAP header add at the beginning of a Modbus TCP transmission?
How many extra bytes does the M-BAP header add at the beginning of a Modbus TCP transmission?
What is the purpose of the Modbus Application Protocol (M-BAP) header?
What is the purpose of the Modbus Application Protocol (M-BAP) header?
What type of protocol is Modbus?
What type of protocol is Modbus?
What does an ADU consist of in Modbus?
What does an ADU consist of in Modbus?
What is the function of Modbus commands?
What is the function of Modbus commands?
What is the Modbus address range for devices that can respond to commands?
What is the Modbus address range for devices that can respond to commands?
What is the Modbus address type for Boolean data type input coils?
What is the Modbus address type for Boolean data type input coils?
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