SNMP Traps
The Sentry supports three types of SNMP traps. Traps are enabled at the tower (T), infeed (I) or outlet
(O) level.
Trap Summary
Name | Level(s) | Description |
Status | T, I, O | Operational status change |
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Change | O | Control status change |
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Load | I | Input load out of limit |
All traps include the Location of the Sentry as defined with the Set Location command.
Status trap
A Status trap is generated when an error condition occurs on a tower, infeeed, Environmental Monitor or individual sensor. Status traps include the reported Status, the Location of the Sentry and identifier and name of the affected tower, infeed, outlet, environmental monitor or sensor.
Any error state generates a Status trap and triggers the trap timer. A new trap is generated at the end of every timer period until the Status returns to a
Tower Status traps
Status | Error | Description |
Normal |
| Tower is working correctly |
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NoComm | x | Communication to the tower has been lost |
Infeed Status traps
Status | Error | Description |
On |
| Infeed is on |
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OffError | x | Infeed should be on but no current is sensed at the infeed |
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NoComm | x | Communication to the infeed has been lost |
Outlet Status traps
Status | Error | Description |
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On |
| Outlet is on |
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Off |
| Outlet is off |
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OnWait |
| Outlet Status in transition |
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OffWait |
| Outlet Status in transition |
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OnError | x | Outlet should be off but current is sensed at the outlet |
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OffError | x | Outlet should be on but no current is sensed at the outlet |
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OffFuse | x | Outlet should be on but a blown fuse has been detected |
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NoComm | x | Communication to the outlet has been lost |
NOTE: Traps are generated according to a hierarchical architecture; i.e. if a Tower Status enters a trap condition, only the Tower Status trap is generated. Infeed and Outlet Status traps are suppressed until the Tower Status returns to Normal.
Change trap
The Change trap is generated for all outlet status changes between any on/off conditions. Change traps include the outlet status, Location of the Sentry, and identifier and name of the affected outlet. For descriptions of the outlet status types, please refer to the prior table.
50 • Advanced Operations | Sentry PT22 |
| Installation and Operations Manual |