June 2007System Integration & Control Systems Design
At a breakfast held on 17 May 2007 at the Process Show exhibition in Nasrec, Johannesburg, Siemens officially launched the new Simatic PCS 7 Version 7 to key industry leaders in the process automation industry. This innovative technology was also the highlight of the Siemens exhibition stand at the Process Show, with visitors being given a first-hand demonstration of the process control system in operation.
Siemens Automation and Drives (A&D) has improved the performance of its Simatic PCS 7 process control system in the new Version 7, and added a host of new functions. These include innovations in the areas of process security, asset management for plant components, and data exchange.
Plant security
Plant security in Version 7 is enhanced by the intelligent alarm management system that prioritises incoming alarms so that operating personnel can pinpoint the most urgent cases. Also new is comprehensive protection against hacker attacks on plant operator's IT systems. The alarm management system is based on the coordinated interaction of individual measures such as encryption or firewalls and a defence-in-depth security architecture.
Asset management
In addition, the new version allows integration of non-intelligent plant components into plant-level asset management. To monitor mechanical assets such as heat exchangers, tanks, pumps or motors, special functions have been developed via which maintenance alarms can be channelled into the asset management system and thus displayed to the service personnel on the maintenance station.
Redundancy and communications
Simatic PCS 7 Version 7 offers redundant Profibus-PA fieldbus communication based on couplers and intelligent active field distributors (AFDs). This now provides plant operators with a fully integrated and scalable redundancy solution, from the automation system right through to the PA field device. The result is increased availability of their production plants and the avoidance of unscheduled plant standstills. The new version also has interfaces to Foundation Fieldbus and thus creates a link for FF instruments and actuators. With the OpenPCS-7 interface of Version 7, users can also integrate their control systems direct into higher-level systems for production planning, process data evaluation and management.
Change management and traceability
The 'Engineering Station' function has been added to the Simatic Logon user management system, allowing comprehensive access protection and traceability of changes for configuring purposes. The new function of online multi-user engineering enables several specialists to access the central database in parallel and work on the plant configuration.
Hardware
On the hardware side, the new version of Simatic PCS 7 with new S7-400 controllers has a higher processing speed of up to 25%, depending on controller type, at a memory capacity of up to 30 MB.
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