Difference Between Hardware And Software In Hindi Pdf

Difference Between Hardware And Software In Hindi Pdf series#

Now, Functional Blocks are also available in the PLC systems, which really makes it comparable to DCS.Дў) When DCS started emerging in the market, idea was to supply DCS with whole bunch of hardware and software packages including for Human Interface, necessary for the complete automation of the plant, thus facilitating Single Point Configuration in terms of database and communication possible in general.ДЄdditionally, Human Interface does not need separate communication package i.e DDE server, to communicate with the controller. There are few similarities and dissimilarities which I would like to mention here:ДЎ) DCS are designed or made available to the user in a way that only configuration in form of a Functional Block has to be carried out unlike PLC, where complete programming has to be implemented using any one of the different languages available in the system. The topic has remained under debate for long, and especially today when we have already entered into new era of Hybrid Distributed Control Systems, it has become increasingly difficult to select and differentiate the advantages and drawbacks one can get from different systems. There have been claims and counter claims from different manufacturers that their system is DCS or PLC. What are attributes and characteristics which differentiate the PLC system from the DCS. Most of the inputs and outputs for discrete control are binary, meaning they have only two states: On and Off. Whole discrete logic used to be implemented with relay circuitry. Historically a PLC was in discrete control of manufacturing processes.

PLC stands for вЂњProgrammable Logic ControllerвЂќ

Difference Between Hardware And Software In Hindi Pdf series#

Process plants used to have long series of panel mounted Single Loop Controllers (Analog/PID controllers). In Literary meaning, a Distributed Control System (DCS) refers to a control system usually of a process or manufacturing system, in which the controller elements are not central in location (like the brain) but are distributed throughout the system with each component sub-system controlled by one or more controllers. As such, a large number of the inputs and outputs are analog like a 4-20mA signal or 0-10V signal. DCS stands for вЂњDistributed Control SystemвЂќДCSвЂ™s were designed to control processes, not discrete operations.