DNP3 object points

Polled values received from the DNP device that have associated PI points will have the value either sent to the PI or discarded. A value is discarded if the value is received for a scanclass that the point does not belong. All integrity scans, event scans, and unsolicited messages received from the DNP device will be sent to the corresponding PI point regardless of the point assigned scanclass.

Heartbeat Points

• Location3 is set to the DNP address of the device.

• Location3 is set to 0 for the interface heartbeat point (non-UniInt health point).

• Location5 must be set to equal to 0 for all heartbeat points.

Reset Link Counter Point

• Location3 is set to the DNP address of the device.

Counter Freeze Request Point

• Location3 is set to the DNP address of the device.

• Location4 (scan class)

• The scan class determines the frequency at which input points are scanned for new values. Set Location4 to 0 for event-based (trigger) points, unsolicited inputs, and output points. For auditing changes to points, set Location4 to -1 to record the short-form version of point attribute changes or -2 to record the long-form version.