Finish the unit modules

There are a few more things we need to do to finish the unit modules for the color tanks. For each unit module, we will perform the following tasks:

• Change the phase type to Controller for phases assigned to the unit module. (This will be demonstrated in a later chapter, after we create phases and assign them to units.)
• Assign the unit module to a node (usually the controller, but, for simulation, it may be the workstation). The easiest way to assign unit modules to a node is to drag the entire area to the node. To assign individual unit modules, there are several different methods that can be used. In the DeltaV Explorer, assignment  can be done on the Tools tab of the Unit Module Properties dialog. It can also be done using the context menu (Assign → Unit and All Contained Modules to Node) or using the drag-and-drop method. In Control Studio, on the Home tab, in the Module group, click Assign to Node. 
• Assign the area (EXTERIOR_PAINT) to the Alarms and Events subsystem under the workstation. This is necessary because the batch operator is only allowed to operate modules that are assigned to the Alarms and Events subsystem for the particular Operator Station. This prevents an operator from inadvertently causing an alarm condition on a module that cannot be viewed on the operator's workstation.
• Download the controller or workstation.

To finish the unit modules, complete the following steps:

At this point all the equipment entities have been defined. Now we will move on to configuring the phase logic that will be used in the process.