DNP3 Driver Tag Type Properties: Options Tab
The options tab of the DNP3 driver tag properties folder is used to set various DNP-specific options associated with the driver.
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A Class 0 data will return all static data in the RTU that is non-event data. It is used as an integrity check whenever communications are restored after a failure or on a periodic basis.
How often a class 0 scan will be done in seconds.
Event data belongs to one of three classes with class 1 being the highest. These checkboxes allow the disabling of data retrieval for any of the three classes. If the RTU indicates that data is available for a disabled class, VTS will not retrieve it.
The rate (in seconds) at which VTS should check for event data in the RTU. This is done by sending a class data request for those classes that are enabled.
The time interval for which VTS will delay a failed message to allow other messages on the same port to be transmitted. This allows better performance when multiple RTUs share the same port and a message or messages to one RTU are timing out, thus slowing down communications to all RTUs.
If set to TRUE, VTS will listen for unsolicited event messages (i.e. application layer) from the RTU. The configuration of the Allow Unsolicited Communications checkbox in the Serial tab has no affect on this behavior.