Binding equipment with equipment trains and dynamic unit allocation

The following information for binding equipment pertains to equipment that is part of an equipment train. You cannot rebind a unit that has a selection mode of From_Policy. Rebinding can only occur when the selection mode is DEFER. Unit selection policies may also be in use for the dynamic allocation of units. This information is in addition to the general conditions discussed above.

Rebinding with Equipment Trains and Dynamic Unit Allocation
Unit Alias Selection State	Unit Rebind Selection Mode = DEFER
OPEN	Allowed
SELECTING	Allowed
SELECTED	Allowed
COMMITTED	Not Allowed

Change of Selection Mode in Equipment Trains and Dynamic Unit Allocation for Rebinding
Unit Alias Selection State	Selection Mode Change
Unit Alias Selection State	Defer -> From_Policy	From_Policy -> Defer
OPEN	Allowed	Allowed
SELECTING	Not Allowed	Not Allowed
SELECTED	Not Allowed	Allowed Note: Switching to Defer requires the operator to select a specific unit.
COMMITTED	Not Allowed	Not Allowed

Note:

There are two variations of SELECTED state for a unit alias with a From_Policy selection mode.

Selected, Not Assigned - While the step (with the From_Policy selection mode) is acquiring the equipment, the unit alias state is set to SELECTED even though a unit is not yet assigned to the unit alias.

Selected, Assigned - If the Batch Executive option, Allow change to the acquired unit for a step, is selected, then the unit alias selection state goes from COMMITTED to SELECTED when the step (with the From_Policy selection mode) completes (that is, when the unit is released).

When a unit alias has the selection state of SELECTING, you cannot performing an Active Step Change. Therefore, the following tables show SELECTING as Not Applicable.

Active Step Change Rebinding in Equipment Trains and Dynamic Unit Allocation
Unit Alias Selection State	Unit Rebind Selection Mode = DEFER
OPEN	Allowed
SELECTING	Not Applicable
SELECTED	Allowed
COMMITTED	Allowed

Important:

The Batch Executive option, Allow change to the acquired unit for a step, must be enabled when the batch was created to rebind equipment on an active step.

Change of Selection Mode in Equipment Trains and Dynamic Unit Allocation for Active Step Change Rebinding
Unit Alias Selection State	Selection Mode Change
Unit Alias Selection State	Defer -> From_Policy	From_Policy -> Defer
OPEN	Allowed	Allowed
SELECTING	Not Applicable	Not Applicable
SELECTED	Not Allowed	Allowed
COMMITTED	Not Allowed	Allowed

Note:

There are two variations of SELECTED state for a unit alias with a From_Policy selection mode.