Run a manual start/auto stop countdown

You can manually start a countdown and have the system automatically stop it when it reaches the target volume. For the Manual (Man) Start/Auto Stop Countdown Type, operations can be initiated manually, but they will also occur automatically whenever a target is reached. The following diagram illustrates the state transitions that occur as part of the Man Start/Auto Stop Countdown Type:

Before you begin

Complete the steps in Schedule a countdown target.

To run a manual start/auto stop countdown

1. On the Countdown Control dialog, select Complete to move the current countdown to the Previous Countdown column, and the pending countdown to the Current Countdown with a mode of Stopped.

   

   

2. Select Start.

   The countdown starts.

   Note: If you stop a countdown, and no pending countdown exists, you can re-start it from zero. If you stop a countdown, and a pending countdown exists, the system completes the current countdown and moves the pending countdown to the Current Countdown column with a mode of Stopped.

   When the volume and time reach the values indicated in the Warning fields, the following fields take on a yellow background:

   • Flow Rate

   • Time to Target (hh:mm)

   • Starting Count

     When the target is reached, these same fields take on a red background. The colored backgrounds indicate the generation of applicable alarms.

     

     When the system reaches the volume target, one of two things can happen:

   • If no pending countdown exists, the system stops the countdown but does not move it to the Previous Countdown column.

   • If a pending countdown exists, the system:

     • Stops the countdown.

     • Completes it.

     • Moves it to the Previous Countdown column.

     • Moves the pending countdown to the Current Countdown column.