Acronyms

Acronyms used in Process Control and Automation A ABS – Acrylonitrile Butadiene Styrene ACK – Acknowledgment AI – Analog Input AMD – Advanced Micro Devices ANSI – American National Standards Institute: http://www.ansi.org ANSI-C– American National Standards Institute- Programming Language AO – Analog Output API – Application Programming Interface ARP – Address Resolution Protocol ASCII – American Standard Code for Information Interchange ASICs – Application Specific Integrated Circuits AUI – Attachment Unit Interface B BNC – Bayonet Nut Connector BOOTP – Bootstrap Protocol C CAN – Controller-area Network CDC – Change Data Capture CFC – Continuous Function Chart CIP – Common […]

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Process Control & Instrumentation Terms

Analog Signal Analog signals are like voltage or electric current signal, representing temperature, pressure, level etc. Usually the electrical current signal is of magnitude 4-20 mA where 4 mA is the minimum point of span and 20 mA is the maximum point of span. Analog to Digital Converting, A-D Converting Electronic hardware converts analog signal like voltage, electric current, temperature, or pressure into digital data a computer can process and interpret. Auto Mode In auto mode the output is calculated by the controller using the error signal – the difference between set point and the process variable. Closed Loop Controller […]

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