The CEMView application consists of a CEMView Client application layer and a CEMView Server application layer. The CEMView Server application depends on instrument specific OPC Servers to interface to the analysis instruments.
The advantage of this three layered arrangement is that the complete CEMView application is generic and modular. It contains absolutely no instrument specific components, yet it is capable of interfacing with any analysis instrument and can be configured to suit any CEM DAS application.
CEMView Client
The CEMView Client application is the visualization layer of the CEMView application. It hosts the user interface for viewing the process variables, the real-time and historical charts, alarms, diagnostic information, and for generating and viewing reports. It can be deployed on both the local and remote computers. CEMView Client uses the OPC Server and OLE-DB provider interfaces to connect to the CEMView Server application.
CEMView Server
The CEMView Server application can be considered the core of the CEMView application. CEMView Server does not interface directly with the analysis instruments. Instead, it establishes an OPC connection with instrument specific OPC Servers which in turn communicate with the analysis instruments.
The Redundant CEMView option is effectively two independent instances of the CEMView Server application operating in parallel, with enhancements to effect the redundancy requirement.
OPC Servers
Instrument specific OPC Servers are used to interface with the analysis instruments using a direct communication connection.