The Configuration Module provides a dynamic mechanism to re-configure the system for start-ups, shutdowns and operating mode changes. Alarm and non-alarm parameters can be configured. Therefore, the configuration of control and alarm points is always appropriate for the current operating mode.
- Change alarm priorities / trip points
- Change mode / mode attribute
- Change tuning / point confi guration
- Periodic case enforcement
- Area access security
- Interface schematic displays
Configuration is accomplished by changing any program-accessible parameter. Logically related points are grouped into configuration modules with a defi ned sequence of point parameter references and associated values to be read or written. Not a single line of custom code is required for these generic capabilities.
The configuration modules are activated through a generic selector which operates in manual, semi-automatic or automatic mode. A user-configured logic dynamically determines which configuration module to activate in semi-automatic or automatic mode. Other module types can be linked together to provide the final application. The selector can also be confi gured to periodically enforce a configuration module.
Built-in security prevents accidental use from other areas. Operator interface schematic displays provide module details, execution status, and easy-to-use access to both selectors and configuration modules. These displays are accessed through a target subpicture which allows seamless integration with client schematic displays. Advanced features include time delays, links to other selectors, alarm and configuration modules, error branching and event initiated processing.
Control and alarm points are generally configured based on normal operating conditions. The operator uses these points to maintain automatic control, respond to disturbances and prevent them from growing in severity.
- Unit Start-ups and Shutdowns: During operating mode changes, many meaningless alarms are annunciated. The operator must search displays and determine which alarms are significant. Conversely, some start-up and shutdown conditions do not have appropriate alarms because they conflict with normal operation alarm settings.
- Product Switches: Some process units produce a variety of products or grades. Such units do not have a single set of normal operation conditions. This introduces management problems because of a static configuration.