What is a master-slave network?
A master-slave technique is one in which only one device (the master) can initiate transactions (queries). The other devices (the slaves) respond by supplying the requested data to the master, or by taking the action requested in the query. Typical master devices include touch screens or PCs running Wonderware, Intellution or LabVIEW while slaves include PLCs and smart devices such as Proportional, Integral, Derivative. Control algorithm that is used to closely control processes such as temperature, mixture, position, and velocity. The proportional portion takes care of the magnitude of the error. The derivative compensates for the rate of error change. The integral takes care of small errors over time.”>PID controllers or meters.
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