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S88

Also known as ANSI/ISA-88. A standard addressing batch process control. S88 provides a consistent set of standards and terminology for batch control and defines the physical model, procedures, and recipes. The standard sought to address the following problems: lack of a universal model for batch control, difficulty in communicating user requirement, integration among batch automation suppliers, and difficulty in batch control configuration.

RS485 Multidrop

A standard defining the electrical characteristics of drivers and receivers for use in balanced digital multipoint systems. Multiple receivers may be connected to such a network in a linear, multidrop configuration.