Enable Unit Control and Unit State Tags

The Batch Manager uses unit control tags to inform the control system of an operator initiated batch hold, restart, or abort action. When a hold, restart, or abort action is initiated, Batch Manager identifies the units involved in the batch and sets the appropriate tags within the control system. The control system manages control phase logic as required by an application. The three types of unit control tags are unit hold, unit restart, and unit abort.

Unit state tags are discrete, and are used by the control system to inform Batch Manager that the status of a unit is alarm, held, run, or ready.

Unit control and state tags are automatically created for each unit in a class when you enable the Use Unit Control/State Tags check box.

To enable unit control and state tags for a process class

1. From the Process Classes list, select the required process.

2. Enable the Unit Control/State Tags check box.

3. Click Change to associate the unit control and unit state tags with the Process Class.