The DeltaV system includes a library of module templates. You can use the module templates as starting points for the modules you create. Although these templates already have all the necessary characteristics and algorithms defined for you, you can customize them for your particular application.
The module templates, available in the Library section of the DeltaV Explorer, are completely configured. If a particular module template substantially matches your control requirements, you can create a control module by dragging the template to your Control Strategies in DeltaV Explorer. Then, edit as much or as little of the module configuration as necessary, assign I/O to the module, and download it. You can also drag module templates to the Advanced Definitions section of the DeltaV Explorer Library to be used in the creation of module classes.
For example, to configure a loop in a DeltaV system, select a loop module template from the library. The loop module template already has alarms, parameters, an algorithm and other parts necessary for a loop defined for you. Use the loop module template as a starting point from which your loop can inherit all the template parts and characteristics for your specific loop. Next, define the unique operating parameters for your loop. For a typical loop, the unique parameters include: the tuning parameters (gain, reset, and rate), the EU range, the alarm trip points, the I/O, and the module's name. You need only change the parameters for which you do not want to use the default values.
The DeltaV module library contains templates for analog and discrete monitoring and control. There are templates for PID control, cascade PID control, motor and valve control, and analog and discrete monitoring. DeltaV has pre-configured operator display elements for each of the module templates. Together, the module templates and their corresponding displays provide a means to quickly configure your control strategies and operator environment. You can also develop your own module templates and store them in the library with the standard templates.
Review the module templates provided with the system to find those that match your control strategy requirements.
Module templates can be class-based.
The DeltaV module templates can be used directly to create modules. If you need to customize them to conform to the standards and conventions used in your plant, however, it is best to make a copy first and modify the copy.