Precautions and Considerations

If you need to access manual operation, you must be aware of the phases that are running manually and must be able to resume or abort the phases after a system failure. You should also be aware of how Batch Manager initializes the Batch Display for Target, Hi Dev, and Low Dev values when tags are assigned to them.

If you are using manual operation and a system failure happens, the following sequence of events occur. Operator actions are required to rectify the manual operation status.

1. All equipment that had been manually allocated to run phases through the manual operation batch are not allocated when the system is restarted.

2. All phases that were active prior to the system shutdown are active while the system is shut down. However, the state of the phases is unknown to the system when it is restarted.

3. The operator using manual operation is responsible for returning to the manual operation batch, manually allocating the equipment that had been previously manually allocated, and starting the phases that had been previously active.

4. Upon restarting the previously active phases, the status of the phase is the current status of the phase in the control system. Thus, the phase may go to Run, Held, Done, or Aborted depending on the actual state of the phase in the control system.

5. The operator can continue manual operation as normal.

   Note: Manual operation can be made accessible only to personnel with the proper security clearance. Therefore, it is their responsibility to clean up the manual operation phases following a system failure. Failure to properly clean up the manually operating phases can cause problems when scheduled batches require the use of the stray phases. It is also recommended that when manual operation is in use and a system failure occurs, the Batch Manager must be restarted without the Restarting Batches option. This ensures that all batches are resumed in Held status and that none of these batches can automatically allocate equipment that is needed to clean up any phase that was run using manual operation.