Every xPM I/O slot tracked by LCN I/O Spares Management carries one of six reservation statuses - the same statuses used by the PKS Hardware View. The status reflects the full life-cycle of the slot - from an unrecorded spare through to a commissioned point that has been formally released back to the pool.
Status Reference
Status
Meaning
Typical next action
None
No IOSparesDb record exists for this slot. The slot may or may not be a spare - no engineer has interacted with it yet.
Open the Slot Reservation dialog and reserve it, or leave it unrecorded if it is not a spare.
Available
A record exists in IOSparesDb and the slot is confirmed as a spare with no active reservation. This status is set when a previous reservation is cleared or released.
Reserve it for a project when needed.
Reserved
The slot is earmarked for a named project. An engineer has saved a reservation with a project name, owner, new tag name and description, optional undo date, and optional note.
Wait for the project to build the point on the slot, run Rescan xPM I/O Assignments and then Reconcile to detect commissioning automatically, or release it manually if the project is canceled.
Assigned
The slot was reserved and has since been detected as assigned to a point (matching NTWKNUM, NODENUM, MODNUM, and SLOTNUM) during a Reconcile pass. It is no longer a spare.
Release the reservation formally to return the record to Released.
Released
The reservation has been formally closed. The engineer has confirmed the slot is either back in the spare pool or permanently assigned and no longer needs tracking.
No further action required. The record is retained for audit purposes.
Stale
The reservation has become invalid. Either the Undo by date has elapsed without manual intervention, or a Reconcile pass detected a discrepancy - for example, the slot tag changed, the I/O Module no longer exists, or the slot was assigned to a point without a formal release.
Open the slot in the Slot Reservation dialog, review the situation, then either re-reserve with a new deadline or clear the record.
Reservation Life-cycle Diagram
Slot is a Spare
Status: None or Available
|
| Engineer clicks Reserve
v
+--------------------------+
| Status: Reserved |
| Undo date: (optional) |
+-----------+--------------+
| |
Reconcile | | Undo date elapses
detects | | (Reconcile pass)
assignment | v
v +----------------+
+------------------+ | Status: Stale | <-- Review required
| Status: Assigned| +-------+--------+
+--------+---------+ |
| Release | Engineer corrects
v v
+------------------+ Status: Reserved
| Status: Released | (re-reserved or cleared)
+------------------+
Note - Released records are retained Released records are kept in IOSparesDb for audit and reporting purposes. They are not deleted. A Released slot can be re-reserved if needed - a new reservation simply overwrites the existing record.
How Statuses Are Set
Status
Set by
None
Default - no IOSparesDb record exists for the slot.
Available
Engineer or SuperAdmin clears an existing reservation via the Clear button in the Slot Reservation dialog.
Reserved
Engineer, Technician, or SuperAdmin saves a new reservation via the Save button.
Assigned
Set automatically by the Reconcile pass when it detects that a reserved slot is now assigned to a point in the configuration snapshot.
Released
Engineer or SuperAdmin clicks Clear on an Assigned slot, confirming formal release.
Stale
Set automatically by the Reconcile pass when the Undo by date has elapsed, or when a discrepancy is detected between the reservation record and the current xPM hardware topology.
Status Badges in the I/O Channel View
The Status column of the I/O Channel View combines the assignment state and the reservation status:
Badge
Meaning
Assigned
The slot is assigned to a point in the configuration.
Spare
The slot is unassigned and has no active reservation.
Reserved
The slot has an active reservation.
Stale
The slot's reservation is stale and requires review.
Tip - Color coding in exports The Export All Hardware I/O Channels workbook uses row background colors to highlight reservation status at a glance.
