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Communication

Overview of OPC Communication

S Bharadwaj Reddy
OPC Communication Introduction In recent years, the OPC Foundation has defined a number of software interfaces to standardize the information flow from the process level to the management level. The...

What is OPC ?

S Bharadwaj Reddy
OPC : OLE (object linking and embedding) for Process Control   OPC  is a software interface standard that allows Windows programs to communicate with industrial hardware devices. OPC is implemented in server/client...

Top 100 Networking Interview Questions & Answers

S Bharadwaj Reddy
Here is the complete list of Top 100 Networking Interview Questions & Answers useful for your interview preparation for the Network Engineer. Networking Interview Questions Define Network? A network is...

Profibus Communication Interview Questions & Answers

S Bharadwaj Reddy
Read the frequently asked Profibus Communication Interview Questions & Answers useful for Automation Engineers, PLC Engineers, DCS Engineers. Profibus Communication Questions What is PI ? PI was formerly know as...

Basics of Foundation Fieldbus

S Bharadwaj Reddy
How Fieldbus Works In analog controls systems, instruments produce a 4-20mA output signal that travels all the way from the remote field areas to the control room through marshalling rack, remote I/O...

OTDR Testing

S Bharadwaj Reddy
An Optical Time-Domain Reflectometer or OTDR is a sophisticated test instrument used to probe the characteristics of long optical fibers. They work by injecting a very brief pulse of light...

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