Specifications

Rockwell Automation Publication AG-SG001G-EN-P - April 2015 61
Chapter 4
Choosing a Device for a Master Station
Overview
The master station in a SCADA system does the following:
• Gets field data by periodically reading and/or receiving data directly from
the remote stations or through a submaster
• Provides coordinated monitoring and control over the entire system
through its operator interface
Several master station types are possible.
Figure 5 - Available Master Station Types
Topic Page
Choosing a Computer-based Master Station
63
Choosing a Programmable Controller-based Master Station 65
Choosing a Data-concentrating Submaster Station 66
Choosing a Data-routing Submaster Station 67
Needed Equipment 69
Installation Guidelines 69
What To Do Next 69
remote stations
remote stations
remote stations
DH+™, Ethernet or ControlNet
RS-232 links
In small SCADA systems, a single
personal computer can serve as
both the master station and central
computer.
Use a programmable controller as a
master station if an application
requires one or more master stations
separate from the operator interface,
such as when you need to control
local inputs and outputs.
Computer-based Master
PLC-based Master
Ethernet
Remote Stations
Remote Stations
Remote Stations
Serial or Ethernet
FactoryTalk View SE
Software with DNP3
OPC Driver
Serial or Ethernet