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DPA Messages
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DPA protocol (messages) is transferred over an interface that connects (DC)TR module (“slave”) to a superordinate system (”master”).

         Master sends DPA Request.

         If addressee (NADR) is a (remote) IQMESH [N], not a local over the interface connected device (applies only to [C]), then:

         The device immediately sends DPA Confirmation back to the interface master.

         [N] processes the DPA message.

         If the DPA message does not have a read-only (can be configured by EnableIFaceNotificationOnRead) side-effect and the interface is enabled for the DPA communication at the [N] side, then the [N] sends DPA Notification to its interface.

         If the DPA message was not sent using the broadcast address.

         [N] returns DPA response to [C] via RF.

         [C] receives the DPA response and re-sends it to the interface master.

         In the case of a local device

         The device processes the DPA Request. In this case, both the sender and addressee address values of the request equal 0xFC (local address).

         The device returns the DPA response to the interface master.