More advance RTU allows the user to assign the class of each event object. Master Devices will accept both time-tagged and non-time-tagged for all event data. This ensure that the slave clock is synchronized before the event data are polled. This is used to limit the amount of data that a level 2 slave may return per poll. FIO” instead of “.

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DNP3 Driver Guide – Configuring a DNP3 Slave Outstation

Poll for static data only. Most communication is unsolicited, but also polls for event data and static data.

Never request for Data Link confirmation. DNP3 event object 2, variation 3 and index 0 from device Master.

DNP3 OPC Server Configuration Guide

The Device Polling schedule can be paused by writing a value of 2 to the Device. Poll Interval Interval between poll for that poll type.

Writing a 1 to Data Link Layer Confirmation: Status Event Lifetime Event data older than Event lifetime are discarded by the slave. The master can initiate time synchronization with any slave by writing any value to the write only object ” Level 3 RTU allows the Master to assign the class of each event object dynamically.


The operate will only be issued if the select is successful. This is dn;3 standard feature of OPC. The following OPC Gateway item will turn off the Needtime internal indicator as soon as the device comes online. This is used to limit the amount of data that a level 2 slave may return per poll. Request not accepted as the operate message was received after the arm timer timed out. No previous matching select message i.

DNP3 OPC Server Configuration Guide

Performance IOServer running on a Pentium 4, 2. Try to use as small value as you can less than 50ms. File” Object initiate file transfer operations, Dnpp3 write command is a string of the form: If the slave reports 2. Master Station Mode of operation.

Poll Static Data Operation – Polls for the specific static data it requires. Events received will be reflected in their static objects, eg. Writing a non-zero value will cause the Freeze command to be issued.

When attaching multiple devices to a port, each device can access the port anytime without waiting for another device to finish. Perform a read after operating the output. Sends static data in unsolicited Responses when device restarts. You can inserting a delay between each advise by setting the Preference. The meaning of the result code are: Master Station Address The address of the Master station.


OPC clients are allowed access to static 1, 20, 30 or output objects 10, 40 OPC clients are not allowed access to events 2, 22, 32 or output block objects 12, Maximum number of analog output Pulse On – The point is turned on for on time, then turned off for off time. Enable will return a value of 0 if the device is offline.

For analog outputs, the