DCS Systems

We have completed Distributed Control System projects using the Siemens PCS7, ABB, Honeywell and Rockwell systems.

A system which is becoming increasingly popular especially in the energy from waste sector, is the Siemens PCS7 DCS system. We have worked with various versions, from Version 6 in 2006 to current projects using the latest PCS7 software releases and libraries.



Rockwell - Plant PAx Library
Siemens - PCS7
ABB - AC800F/AC700F Field Controller (ControlBuilder F)
Honeywell - HC900

PCS7 System


We are currently working on a complex PCS7 project which includes intrinsically safe HMI units, interface to a third party database in Munch using the SOAP protocol, five 70" monitors providing key plant performance information and operator prompts. The system also includes a safety system.

The project has been developed by working closely with the client’s process engineers to define the control philosophy and develop the Functional Design Specification. The process has proved to be extremely complex as it involves the generation, drying, compressing and bottling of acetylene gas.


Rockwell PAx System


We are developing a Rockwell Plant PAx Distributed Control System. The control system is developed across three Rockwell controllers also integrating a large third party package plant based on the Rockwell control system and the integration of a Siemens Turbine Control system. The control system is being developed utilising the Plant PAx library including utilising some of the specialised steam calculation instructions.

The Operator Interface is provided by a Factory talk system providing two Operator Workstations. The Management Information System is provided by the Factory Talk Historian with distributed Historian ME modules providing high speed, reliable data capture. The captured data is transferred to a Historian SE for long term storage and data analysis.

The implementation of the Plant PAx system has reduced engineering time and costs.


Management Information Systems


We have implemented Management Information Systems using VPN networks (Virtual Private Networks) for data collection. The system has dual redundant data collection nodes at each of the 10 distributed locations providing data buffering if the VPN communications is not available. The buffered data is automatically forwarded to the Historian Servers when the communications is restored.