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Source Code Library For Communication Protocol Development Distributed Network Protocol which is abbreviated DNP3 stack is a set of communication protocols which are commonly used by water and electric companies. It is uncommon for other companies to use DNP3 stack. The main reason the DNP3 stack was developed is to ease communication between different kinds of equipment that are used to collect data. For supervisory management and control DNP3 protocols are used. To pass data from master stations to Remote terminal units or intelligent electronic Devices (IEDs) the SCADA systems rely heavily on DNP3 protocols. The way DNP3 stack came about is fascinating. To permit interoperability between different vendors SCADA components for the electric grid a standard was required and that’s how DNP3 protocol came about.
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DNP3 protocol gives dependable communications in the remote areas that are not suitable for installing electric utility automation systems. The DNP3 stack helps to overcome distortion caused by EMI. The protocol extends the lifespan of the aging components, which may now last for decades. Poor transmission media may as well be improved through the use of the DNP3 protocol.
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The DNP3 stack was developed in such a way it would be reliable. However, its security is questionable. Malicious people or hackers could interfere with the DNP3 protocol. If the DNP3 protocol is the major communication stack major critical infrastructure and control systems could be rendered out of operation due to how insecure the DNP3 stack is. DNP3 protocol has in the recent past gotten new features that have contributed to improved security. Secure authentication features has been added to the DNP3 protocol. The suitability of the DNP3 stack comes in such that they are compliant with the IEC 62351-5. Just by adding a few features you would not have to change DNP3 protocol if you want to incorporate IEC 62351-5. The suitability of the DNP3 protocol is brought about by its firmness, efficiency and ability to be interoperable than the aged protocols which is as a result of its strong features. You cannot compare the DNP3 protocol with any other protocol due to its complexity. The DNP3 protocol is among the best stacks since it offers multiplexing, data fragmentation. It also helps in checking of errors in systems as well as linking to control. Time synchronization with a RTU could be supported by the DNP3 stack. The DNP3 stack could be able to receive adequate data to reconstruct a sequence of events that happens in between the polls. Any company should consider in depth the advantages and disadvantages of the DNP3 protocol and indeed any other protocol.