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2Ć2 Product Overview

Original Ć June 1990CE4.2:CL6211

The following paragraphs provide a brief description of each PROVOX

device that can be connected to the PROVOX Data Highway. These

devices can be connected as either network or local devices.

PROVUE

r Ċ The PROVUE operations consoles are a family of operator

interface devices, each of which consists of an electronics unit and up to

four high resolution color video display units. PROVUE consoles are

used to operate processes being controlled by PROVOX devices.

ENVOX Ċ An ENVOX workstation consists of an interface card file and a

desk top computer with a Fisher configuration software package. It is

used for configuring PROVOX devices, and for performing device

diagnostics.

20ĆSeries (SR90) Controller Family Ċ The 20ĆSeries (SR90) Controller

Family is made up of three devices: the Multiplexer, the Integrated

Function Controller, and the Unit Operations Controller. These

controllers are referred to as a family" because they share a common

hardware and software platform, and are designed for batch and

continuous control applications.

Programmable Controller Interface Unit Ċ The Programmable

Controller Interface Unit (PCIU) permits the monitoring of programmable

controller (PLC) operation. Communication between the PLC and PCIU

is conducted over an RS232C link.

Multiplexer Ċ The Multiplexer is a data acquisition device that accepts

input signals from a wide variety of analog, discrete, and pulse count

sources.

Trend Unit Ċ The Trend Unit allows the user to store or display selected

process data from PROVOX devices. Trend data may be stored in RAM

on a temporary basis or to floppy if a permanent record is desired. A

display of the trended data may be viewed on a console and a hard copy

may be made if necessary.

Local Traffic Director Ċ The Local Traffic Director (LTD) is a highway

device that controls communications between the devices on a local

data highway. The LTD is also used to manage communications

between a device on the local highway and a device on the network

highway. Two LTDs may be used in a local area for redundant

communication capability.

Network Traffic Director Ċ The Network Traffic Director (NTD) is a

PROVOX Data Highway device that controls the communications of

network devices and communicates with the local areas through LTDs.

Two NTDs may be used to provide redundant communication capability.

PROVUE is a registered trademark of Fisher Controls International, Inc.

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