SCADA Systems
The definition of SCADA is ‘Supervisory ontrol and Data
Acquisition’. The major fungcion of SCADA is for acquiring data from remote
devices such as valves, pumps, transmitters etc. and providing overall control
remotely from a SCADA Host software platform. This provides process control
locally so that these devices turn on and off at the right time, supporting
your control strategy and a remote method of capturing data and events (alarms)
for monitoring these processes. SCADA Host platform also provide functions for
graphical displays, alarming, trending and historical storage of data.
SCADA Field INstrumentation
PLCs and RTUs
Remote Communications Networks
SCADA Host Sofware
SCADA Security
Historically, SCADA products have been produced that are
generic with a ‘one shoe fits all’ approach to various markets. As SCADA has
matured to provide specific solutions to specific SCADA markets it has provided
solutions for ide area network SCADA systems that rely on tenuous communication
links. These types of SCAFA systems are used extensively thoughout the Oil
& Gas market due to the fact that assets are spread over large geographical
areas.
Looking at the overall structure of a SCADA system, there are four distinct levels within SCADA, thise being:
- Field instrumentation
- PLCs and / or RTUs
- Communications networks and
- SCADA host software
We will discuss each of these levels in detail, describing their function, how SCADA has changed over the past 30 years and the impact of security requirements and regulatory compliance on SCADA system operations.
Source: Retyped From SCADA Systems White paper (Mrch 2012) by Schneider Electric Tekementry & Remote SCADA Solutions
Conclusion of SCADA
About Slave-to- Slave Messaging SCADA
Programmable Logic Controllers (PLCs)
Terminology of PLCs
The L3GD203-Axis Gyro
Looking at the overall structure of a SCADA system, there are four distinct levels within SCADA, thise being:
- Field instrumentation
- PLCs and / or RTUs
- Communications networks and
- SCADA host software
We will discuss each of these levels in detail, describing their function, how SCADA has changed over the past 30 years and the impact of security requirements and regulatory compliance on SCADA system operations.
Source: Retyped From SCADA Systems White paper (Mrch 2012) by Schneider Electric Tekementry & Remote SCADA Solutions
Conclusion of SCADA
About Slave-to- Slave Messaging SCADA
Programmable Logic Controllers (PLCs)
Terminology of PLCs
The L3GD203-Axis Gyro
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