Specifications

B - 8 RSLinx – Training Guide
Purpose
What is needed is a common way for applications to access data from any data source
like a device or a database.
...
OPC Server
B
OPC Server
A
OPC Server
C
Application X
OPC Interface
Application Y
OPC Interface
Figure 0-2. Applications Working with Many OPC Servers
OPC Server in this figure and in the following sections is used as synonym for any
server that provides OPC interfaces, e.g.,
OPC DataAccess Server,
Handheld
PDA
Configuration and
Maintenance
Measurement
-Pressure
-Temp
-Flow
-Level
Valves
Positioners
Coriolis
PD Meters
Common Head
Analytical
-Simple
-Complex
-Analog I/O
-Discrete I/O
-TC/RTD
Fisher
Field Management
Fieldbus
Windows NT
Operator Console
Windows NT
RT/History Data
Server
Windows 3.1
Windows-95
Windows NT
Client Applications
Process Management
Plant Highway
Windows NT
Operator Console
RT/History Data
Server
Business Management
Plant Highway
Controller
Figure 0-1 Process Control Information Architecture