Now we will edit the values in the table to specify the required value of each parameter setpoint for each of the defined states. (A value of 0 will send a closed setpoint to the item and a value of 1 will send an open setpoint to the item.) When you select an item's state, the item's name appears in the Items tab as shown. When the state is Closed, all setpoints should be 0. When the state is Draining, the outlet pump should be on (1) and the waste valve open (1). When the state is Releasing Product, the outlet pump should be on (1) and the product valve open (1).
- Double-click the value 0 in the Draining column for the OUT_PUMP_SP.
- On the OUT_PUMP_SP Properties dialog, change the value from 0 to 1.
- Change other parameter setpoint values so that the table looks like the following, save the file, and close Control Studio.
We now have all the basic control module classes and equipment module classes that will be used for this application. Now we can create the remainder of the equipment hierarchy. This includes creating the unit classes in the Advanced Definitions section of the library and the unit modules in the System Configuration section. After that we will create the phase logic that will be assigned to the unit classes.