August 30 Implementation Chronicles Update

By Control Engineering Staff August 30, 2005

Though both projects are in somewhat of a holding pattern relative to initial expectations, work continues. At the wastewater facility SCADA project, end-to-end testing of the trial system is now complete, but no word has been received regarding the notice to proceed with Phase II. Meanwhile, on the biopharmaceutical filtration automation project, while the HMI hardware has still not arrived, the integrators are designing and developing automatic sequences for the equipment modules.

Wastewater SCADA Project:
End-to-end testing of trial system by QDS Systems is now complete. The trial system included Control Microsystems’ ScadaPack Modbus RTU communicating via an Airlink Raven CDMA cell modem over Verizon’s cell infrastructure and the Internet to a host running Software Toolbox’s TOPS Modbus OPC Power Server, Indusoft’s Web Studio HMI, and a networked Microsoft SQL server.
To get the full details on this project, view the weekly blog updates here .
To view the introductory article explaining this project, click here .

Biopharmaceutical filtration automation project:
With the HMI hardware still unavailable, Cascades Controls integrators spent their time designing and developing automatic sequences for the equipment modules. According to the integrator, equipment modules are “The real meat of the control application.” The current design includes 51 equipment modules (roughly twice what was expected at the start of the project). Each equipment module is designed as a state machine similar to the S88 phase logic state diagram. The equipment module state diagram designed by Cascade differs from the S88 phase state diagram in that any number of states may be defined for one equipment module; state transition logic is also uniquely defined.
To get the full details on this project, view the weekly blog updates here .
To view the introductory article explaining this project, click here .