This articles provides you the MODBUS Questions and answers for the examinations or interview preparation.
Modbus Questions and Answers
Every question have 3 options, you can say like a , b, c… You can find the answers at the end of the article.
1 What three things make up a modbus frame?
address, function code and data
address, transaction code and data
data, function code and window size
2 How many remote relays can an elite unit support?
300
236
256
3 What two things, roughly, are key factors in terms of performance of a modbus tcp/ip system ?
the network and hardware
switches and hubs
modbus server and wiring closet
4 What is the nominal range of an elite wireless modbus master?
200
300
400
5 What was one of the key factors hindering Ethernets as automation networks?
hardware available
the topologies that could be used
its inability to guarantee response times
6 What network device is often deployed in Modbus TCP/IP networks to separate fast response devices from bulk data transport devices?
hubs
routers
switches
7 Which one of these is a “real world” application for modbus TCP/IP?
performing maintenance and repair on remote devices
sending router updates
separating data traffic
8 Which of these businesses are most likely to use Modbus TCP/IP?
power stations
wholesalers
leisure industries
9 Modbus tcp/ip is:?
a protocol
hardware
a type of switch
10 Modbus TCP/IP was mainly developed from which other protocol?
Modbus ASCII
Modbus RTU
Modbus PLC
Modbus Answers
answer[1] = “a”;
answer[2] = “c”;
answer[3] = “a”;
answer[4] = “b”;
answer[5] = “c”;
answer[6] = “c”;
answer[7] = “a”;
answer[8] = “a”;
answer[9] = “a”;
answer[10] = “b”;