Siemens ST PCS 7 manual 13/4, Typical migration scenarios

© Siemens AG 2007

Migration to SIMATIC PCS 7

Introduction

Typical migration scenarios

The migration path that a user takes depends on the specific technical and economical factors of each migration project. The migration products offer the modularity and flexibility required to implement different scenarios. The following are typical migra- tion scenarios which can be implemented using these migration products:

Scenario 1: Replacement of existing HMI system by a SIMATIC PCS 7 operator system

If the HMI (Human Machine Interface) system is technically ob- solete, if the stocking of spare parts is too expensive, if it no longer complies with current directives and standards for oper- ator workstations, or if functional expansions are required (e.g. IT integration), it is possible to simply replace the existing HMI system by a SIMATIC PCS 7 operator system. The controller with application software and the process I/O are retained.

The benefits of these migration step are:

•Minimum costs

•Clear risk

•Lengthening of service life of complete plant

•New application possibilities

•Opening of system for IT world

Scenario 2: Expansion of existing plant

The existing plant is initially retained, and is modernized by ex- panding with further sections/units with SIMATIC PCS 7.

The benefits of these migration step are:

•Simple, step-by-step increase in production capacity

•Clear risk

•Introduction of new technologies (e.g. PROFIBUS fieldbus, HMI)

•Opening of system for IT world

•Together with scenario 1, enables process control using a uni- form operator system

Scenario 3: Comprehensive modernization

Bottlenecks in the provision of spare parts, insufficient support, and the necessity for functional expansions (e.g. fieldbus tech- nology or IT integration) can also force comprehensive modern- ization of the old system using the future-oriented SIMATIC PCS 7 process control system. Conversion may also be possible during operation. Further use of the existing I/O level is sup- ported, and the investments made for wiring, hardware compo- nents or application engineering are safeguarded.

The benefits of these migration step are:

•Increase in performance

•Introduction of new technologies (e.g. PROFIBUS fieldbus, HMI)

•Opening of system for IT world

•Lengthening of service life of complete plant

•Reduction in number of system suppliers

•Elimination of bottlenecks

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Siemens ST PCS 7 · November 2007