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In this video, we’ll walk through how to transmit Sampled Value packets using the Vebko test device

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First, we connect to the device using the MAC Address and set the data acquisition rate to Fast

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 Then, under the Time Synchronizer tab, we set the time synchronization protocol to PTP.

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Next, we go to the Sequencer room and open the Hardware Configuration window.

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In the SV Setting tab, you can either load an SCL file related to the Sampled Value

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or manually define a new stream. In this tutorial, we’ll go with the second method.

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We click the Add Stream button to add a new stream, and then use the plus icon (+)

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in the first column to define the desired number of Attributes

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In this test, we’ve added four Attributes—one configured as a voltage data and the other three as current data.

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We link two of these data points to the output of the test device, and assign fixed values to the other two.

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We then set the Sample Rate to 4 kHz and specify that each packet should contain only one ASDU.

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The linked data is displayed under the Analog Output tab.

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In the Voltage Output Signal and Current Output Signal tables, you can assign each data point

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point to the voltage or current outputs of the device—or define a Virtual output.

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After applying and confirming the settings, you’ll see that two outputs

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one voltage and one current—appear in the Table View module.

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The voltage data is linked to the Phase 1 voltage output of the device

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while the current data is defined as a virtual output.

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To monitor the packets sent by the device, you can use Wireshark software

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Once the test starts, packets following the IEC 61850 Sampled Value

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protocol will be generated and visible in Wireshark

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WiresharkAs you can see, based on the configuration, each ASDU contains four Data Attributes

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two of them are set to fixed values, while the other two are dynamically changing.