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SCADA ( supervisory control and data acquisition) is a control system architecture comprising computers, networked data communications and graphical user interfaces for high-level supervision of machines and processes. It also covers sensors and other devices, such as programmable logic controllers, which interface with process plant or machinery.
A piping and instrumentation diagram (P&ID) is defined as follows: A diagram which shows the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on ...
Shibboleth is a single sign-on log-in system for computer networks and the Internet. It allows people to sign in using just one identity to various systems run by federations of different organizations or institutions. The federations are often universities or public service organizations. The Shibboleth Internet2 middleware initiative created ...
Apache Guacamole is a free and open-source, cross-platform, clientless remote desktop gateway maintained by the Apache Software Foundation. It allows users to control remote computers or virtual machines via a web browser, and allows administrators to dictate how and whether users can connect using an extensible authentication and authorization ...
Central Authentication Service. The Central Authentication Service ( CAS) is a single sign-on protocol for the web. [ 1] Its purpose is to permit a user to access multiple applications while providing their credentials (such as user ID and password) only once. It also allows web applications to authenticate users without gaining access to a ...
RADIUS is an AAA (authentication, authorization, and accounting) protocol that manages network access. RADIUS uses two types of packets to manage the full AAA process: Access-Request, which manages authentication and authorization; and Accounting-Request, which manages accounting.
Ladder logic was originally a written method to document the design and construction of relay racks as used in manufacturing and process control. [ 1] Each device in the relay rack would be represented by a symbol on the ladder diagram with connections between those devices shown. In addition, other items external to the relay rack such as ...
Remote procedure call. In distributed computing, a remote procedure call ( RPC) is when a computer program causes a procedure (subroutine) to execute in a different address space (commonly on another computer on a shared computer network ), which is written as if it were a normal (local) procedure call, without the programmer explicitly writing ...