Modbus Quiz

What is the purpose of Modbus?

• To control industrial automation systems

• To send emails

• To play video games

Which protocol is not a type of Modbus?

• Modbus RTU

• Modbus ANSI

• Modbus TCP

Which type of Modbus protocol is the most commonly used?

• Modbus Wi-Fi

• Modbus Bluetooth

• Modbus RTU

Which type of Modbus protocol is used for serial communication over RS-485 cables?

• Modbus RTU

• Modbus TCP

• Modbus Ethernet

What is the difference between Modbus RTU and Modbus TCP?

• Modbus RTU is used for serial communication over RS-485 cables, while Modbus TCP is used for communication over Ethernet.

• Modbus RTU is a wireless protocol, while Modbus TCP is a wired protocol.

• Modbus RTU is used for communication between devices within a local area network, while Modbus TCP is used for communication over the internet.

In Modbus communication, the object type commonly used for analog values is:

• Coils

• Discrete Inputs

• Holding Registers

The modbus object type commonly used for equipment status or indications is

• Coils

• Holding Registers

• Input Registers

What is the primary function of a Modbus "Master" device?

• Generating requests for data

• Responding to data requests

• Monitoring the network

What is the primary role of a Modbus "Slave" device?

• Initiating data requests

• Responding to data requests

• Managing the network

What does the term "function code" refer to in a Modbus frame?

• A unique device identifier

• An indicator of the requested action or data type

• The IP address of the device