UM1518 datasheet(24/37 Pages) STMICROELECTRONICS

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UM1518

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Figure 22.

Ping session: Master and Slave tabs

The Ping session can be logged in a .txt file, selecting the "Save Logs" switch located on the

right-top edge of both Master and Slave tab. The resulting file records the powerline activity

(both transmitted and received frames) of the node over the Ping session.

5.6.1

Ping protocol

The Ping session consists of an exchange of DL frames between the Master node and one

or more Slave nodes.

Master node

The Master node sends a powerline frame sequence with selectable electrical features:

●

Carrier frequency value (it is overwritten in the MIB object 01h - PHY configuration as

RX operating frequency);

●

Modulation type as in ordinary DL_DataRequest command;

●

TX Gain parameter (it is overwritten in the MIB object 01h - PHY configuration).

These electrical characteristics are equal to each transmitted frame in all frames sent by the

Master over Ping session.

The GUI tool adds specific subfields to the Payload field of the exchanged DL frames, as

shown in Figure 23, where the blue parts need to be specified by the user, while the green

one is automatically built by the GUI tool. The red blocks refer to the fields automatically

handled by the ST7580.

The Payload length selected by the user is limited to 244 bytes.

AM16521v1

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