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Stand-Alone System

In a Stand-alone System, the server-side components (Data acquisition, Alarms, and data logging) and the client-side components (displays and client-side scripts) run on the same computer.

The computer can be a Windows desktop, Panel PC, industrial PC, Linux device, or

embedded system. The stand-alone system can act as a data publisher for remote

platform's servers that act as Edge data collectors.

Distributed Data Acquisition System

Distributed Data Acquisition

System has a server machine and device modules that run on computers dedicated to communication with

PLCs or historians on remote networks that

a server computer cannot reach. In the example image

, the SCADA client can be placed

on the same computer that is running the server computer or in a remote one.

It is a functional model in plants

with devices with serial ports or limited communication capability.

In these plants, communication on

slow or low bandwidth networks is optimized and with a better global performance

by adding I/O servers that interact with the devices.

Client and Server System

In a Client and Server System, a

platform's server runs the server-side modules (alarm, historian, data acquisition).

Other network computers or

remote computers connected by a WAN or Cloud interface execute the operator client stations.

Distributed Control System

A Distributed Control System can have multiple servers

configured in a distributed

architecture in different plants and for different projects.

This configuration allows specific clients to

access

a control room for

these plants or projects.

Since the plant's clients will not be integrated

with a single machine, it is necessary to specify which plant the users want to watch.

In this scenario, the system organization is

in discrete locations controlled by local operators

supported by local redundant servers. At the same time, it is possible to set a management level in a central control room

to monitor all sites simultaneously.

A separate cluster represents each site in the project

, grouping their primary and standby servers.

Redundant Server System

The Redundant Server System presents two different computers running

the platform's servers, and the redundancy is done automatically by the supervisory system itself. Thus, it is only necessary to specify the IP addresses of the primary and secondary stations.

There are a few typical deployment scenarios

for redundant

servers:

• The Alarm and/or Historian database

• runs on a third machine dedicated to historical data.

• The databases in the primary and secondary servers are used to store the historical data of the Alarm and/or Historian modules, with automatic data synchronization between them.

• The device module (

• PLC communication) is also made redundant.

Distributed and Redundant Control System

A Distributed and Redundant Control System

includes a server machine with

Alarm modules, a Historian, a Database, andSCADA Clients located

on different computers on the network.