ACC (Bacnet Accumulator)

This component is a Config object that represents a Bacnet Accumulator object. The Accumulator object represents the characteristics of a meter that indicate measurements by counting pulses.

Figure 156. ACC properties

This component is available in the bacnetAws palette, bacnetOws palette, and the bacnet palette.

To access these properties, expand Drivers > BacnetAwsNetwork or BacnetNetwork > BacnetAwsDevice or BacnetDevice > Config and double-click ACC.

In addition to the common properties (Status and Fault Cause), this component has these properties.

Property	Value	Description
Poll Frequency	drop-down list (defaults to `Normal`)	References the On Demand Poll Scheduler rates under the NiagaraNetwork’s History Policies container slot. Configures how often this type of poll occurs.
Object Id	drop-down list and number (from 0 to 4194302)	Identifies each device and component by the type of entity (`Object Id`) combined with a unique `Instance Number`. For devices (controllers, instruments, meters, etc.), `Instance Number` must be unique within the BACnet internetwork. For components (points, schedules, analog inputs, files, groups, multi state inputs, etc.), it must be unique within the device.
Object Name	text in the format name.name.name.name (default includes the entire component path in the station using period (“/) delimiters between parent.child levels)	Identifies a BACnet object. This name should be unique within this specific device. For components, this name includes the entire component path under the station’s Config using period (.) delimiters between parent.child levels. This enforces (externally) the BACnet requirement for unique names for all objects in a device. For a proxy point, this is the default name in the station. You can shorten or edit `Object Name`, however, each `Object Name` must be unique among all server descriptors under the Export Table.
Object Type	drop-down list of BACnet objects	Reports the type of object.
Facets	Config window or read-only property	Identifies the units used for the current component or point value. These could be parent or child point facets.
Enable	`true` (default) or `false`	Activates (`true`) and deactivates (`false`) use of the object (network, device, point, component, table, schedule, descriptor, etc.).
Status Flags	read-only indicator and check boxes	Configures four status flags for BACnet. These options are available to enable detection of specific status conditions.
Event State	read-only	Reports the status of the event.
Out Of Service	`true` (default) or `false`	Affects only the BACnet exposure and access to the source component. If the source (exported) component is a proxy point, the equivalent `Enabled` property in its ProxyExt is not affected. `true` writes the point’s current value to the `Present Value` property. Often, a remote BACnet client sets (or clears) this Out of Service state. You can set this property to `false` if needed.

ACC (Bacnet Accumulator)

Figure 156. ACC properties

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