Failover status points and attributes

Active ID point tag

PIDataArchiveName-InterfaceGenericName_InstanceID_PointSource_UFO2_ActiveID

Heartbeat point tag

PIDataArchiveName-InterfaceGenericName_InstanceID_PointSource_UFO2_UFO2_Heartbeat_ID

State point tag

PIDataArchiveName-InterfaceGenericName_InstanceID_PointSource_UFO2_UFO2_State_ID

Device status point tag

PIDataArchiveName-InterfaceGenericName_InstanceID_PointSource_UFO2_UFO2_DeviceStatus_ID

Active ID exdesc

[UFO2_ActiveID] or [UFO2_ActiveID:failoverID]

When configuring redundant data sources, each failover pair will utilize a unique Active ID point to monitor which instance within the failover pair is active. Therefore, two Active ID points will be defined for redundant pairs; one for each pair. The failoverID assigned to the[UFO2_ActiveID:failoverID] must be one of the failover IDs configured for the failover pair.

Heartbeat point exdesc

[UFO2_Heartbeat:failoverID]

Device status point exdesc

[UFO2_DeviceStat:failoverID]

State point exdesc

[UFO2_State:failoverID]

compmax

Set to 0.

location1

Set to the interface ID.

location3

For cold failover only. Sets the delay for the primary interface instance with a good device status to stay in the primary state before allowing the backup interface instance with the bad device status a chance to become primary.

To enable this delay, set location3 to a positive value, in minutes, for the amount of time the primary interface instance with a GOOD status will stay in the primary state before allowing the backup interface instance with the bad device status a chance to become primary. The backup interface instance must actively be reporting a good heartbeat in order for the primary interface instance to allow the backup interface instance to become primary.

To disable this delay, set location3 to 0.

location4

For cold failover only. Sets the delay for the backup interface instance to allow the interface instance assuming primary role to clear a bad device status by using a delay. Only valid when location3 is set for delay.

To configure this delay, set location4 to a positive value, in minutes, for the backup interface instance with a good device status to stay in backup-ready state before reverting to normal failover operation. If the primary interface instance did not update to a good device status during the delay, the backup attempts to resume primary role.

Default: location4 value of 0, which is a 5-minute delay.

location5

For cold failover only. Sets the delay for the backup interface instance to attempt to assume primary role when both primary and backup interface instances have equally bad device status. Only valid when location3 is set for delay.

To configure this delay, set location5 to a positive value, in minutes, for the backup interface instance to wait for the primary interface instance to update to a better device status before attempting to assume primary role.

Default: location5 value of 0, which is a 10-minute delay.

pointsource

Set to the point source for all points maintained by this interface instance.

pointtype

Must be set to Int32.

shutdown

Must be set to 0.

step

Must be set to 1.