Events Handling

Spontaneous events are pushed to the relevant servers through the DRIClosed. The IEC870IP driver will confirm with the DRI that events are delivered to the appropriate servers before responding back to the device with acknowledgment. It is possible to change that behavior so that the driver will acknowledge spontaneous events immediately after receiving it from the device by using the parameter DRIGuaranteedEventsDelivery.

If the DRI does not indicate that an event was successfully delivered within the time specified by the parameter DRIResponseTimeout, the driver will still send acknowledgment to the device, though it will also update the driver log with an error message.

By default, DRIResponseTimeout is set to 1000 milliseconds. This means a response can be sent back to the device to allow acknowledgment to take place in a situation where a destination for an event is not configured in the SCADA system.

See Communication Parameters.