SCADA Articles on SCADA World

Trends in SCADA

2010-06-01 10:40:40views: 811N.Sankari

Trends in SCADA

There is a trend for PLC and HMI/SCADA software to be more "mix-and-match". In the mid 1990s, the typical DAQ I/O manufacturer supplied equipment that communicated using proprietary protocols over a suitable-distance carrier like RS-485. End users who invested in a particular vendor's hardware solution often found themselves restricted to a limited choice of equipment when requirements changed (e.g. system expansions or performance improvement). To mitigate such problems, open communication protocols such as IEC870-5-101/104 and DNP 3.0 (serial and over IP) became increasingly popular among SCADA equipment manufacturers and solution providers alike. Open architecture SCADA systems enabled users to mix-and-match products from different vendors to develop solutions that were better than those that could be achieved when restricted to a single vendor's product offering. Towards the late 1990s, the shift towards open communications continued with individual I/O manufacturers as well, who adopted open message structures such as Modbus RTU and Modbus ASCII (originally both developed by Modicon) over RS-485. By 2000, most I/O makers offered completely open interfacing such as Modbus TCP over Ethernet and IP. SCADA systems are coming in line with standard networking technologies. Ethernet and TCP/IP based protocols are replacing the older proprietary standards. Although certain characteristics of frame-based network communication technology (determinism, synchronization, protocol selection, environment suitability) have restricted the adoption of Ethernet in a few specialized applications, the vast majority of markets have accepted Ethernet networks for HMI/SCADA. "Next generation" protocols such as OPC-UA, Wonderware's SuiteLink, GE Fanuc's Proficy and Rockwell Automation's FactoryTalk, take advantage of XML, web services and other modern web technologies, making them more easily IT supportable. With the emergence of software as a service in the broader software industry, a few vendors have begun offering application specific SCADA systems hosted on remote platforms over the Internet, for example, PumpView by MultiTrode. This removes the need to install and commission systems at the end-user's facility and takes advantage of security features already available in Internet technology, VPNs and SSL. Some concerns include security, Internet connection reliability, and latency. SCADA systems are becoming increasingly ubiquitous. Thin clients, web portals, and web based products are gaining popularity with most major vendors. The increased convenience of end users viewing their processes remotely introduces security considerations.


SCADA Articles

Using Free Tools To Detect Attacks On SCADA Networks
2015-05-09 14:28:25views: 1740

ICS/SCADA experts say open-source network security monitoring software is a simple and cheap way to catch hackers targeting plant operations. Operators at Natanz nuclear facility in Iran might well have caught Stuxnet before it spread and sabotaged operations at the plant if they had been watching the wires for anomalous network traffic, a pair of ICS/SCADA experts say.

Hackers gain full control of critical SCADA systems
2015-05-09 14:04:07views: 1806

Russian researchers have found vulnerabilities in industrial control systems that they say grant full control of systems running energy, chemical and transportation systems. The vulnerabilities were discovered by researchers who over the last year probed popular and high-end ICS and SCADA systems used to control everything from home solar panel installations to critical national infrastructure.

SCADA Attacks Double in 2014
2015-05-06 07:17:15views: 1620

Annual threat report from Dell Security shows not only a significant surge in the number of attacks on retail credit card systems, but industrial SCADA systems as well, which are much more likely to go unreported.
For Dell to report an annual surge in point-of-sale (POS) attacks aimed at payment card infrastructures might not be such a surprise to people who pay any attention to the news.

The Industrial Software Revolution Begins Now
2013-10-16 11:33:59views: 2193

Invensys is kicking off the conference “The Industrial Software Revolution Begins Now” and underscoring the ‘revolution’ concept with the release of its Wonderware InTouch 2014 and Wonderware System Platform 2014 software.

Integrating Video into HMI/SCADA
2012-06-29 10:19:55views: 2492

The useful integration of video with industrial control systems has been a reality for a few years, but a burst of applications and installations is on the horizon. Cheaper bandwidth, wide availability of Internet protocol (IP) cameras, and greater familiarity with industrial Ethernet networks seem to be driving user interest.

AdvancedHMI - a different approach to HMI development
2012-06-14 10:46:48views: 1793

AdvancedHMI base package is a free software used to build HMIs that display information residing in a PLC. You will find it to be one of the fastest platforms to build an HMI with. The software takes advantage of the Visual Basic .NET development environment so effort is focused on the core software and not reinventing a development environment.

Web Services and SCADA
2012-06-12 23:06:33views: 1371

Web services can be another method for connectivity to SCADA and MES systems. They can retrieve tomorrow's weather, the price of stocks or commodities, the time of sunrise and sunset, and a slew of other publicly-available resources.

SCADA virtualisation with WinCC Version 7
2011-12-21 12:01:11views: 1311

As automation solutions become increasingly complex, it follows that the effort required to maintain both hardware and software will also increase. PCs must be provided with suitable specification and operating systems to support the applications.

Cloud-Based SCADA Systems: The Benefits and Risks
2011-12-20 22:57:31views: 928

Cloud computing is a hot topic. As people become increasingly reliant on accessing important information through the Internet, the idea of storing or displaying vital real-time data in the cloud has become more commonplace. With tech giants like Apple, Microsoft, and Google pushing forward the cloud computing concept, it seems to be more than just a passing trend.

An alternative to DCS or PLC/SCADA
2011-10-04 13:46:22views: 874

Traditionally, users have had a choice between a DCS or a PLC/SCADA approach when selecting a control system for use in process control applications. A key benefit of traditional DCSs was that the suppliers took a ‘systems approach’ and it was designed for large scale applications.