2.2.3.1 Heartbeat (request)

The CallingConvention parameter in the Dispatcher Request tag MUST be dslrRequest (0x00000001). The function handle for the Dispatcher Request tag for Heartbeat message MUST be 0x00000002.

Request payload (input parameter)


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Screensaver Flag

Screensaver Flag (4 bytes): An unsigned 32-bit integer. The device MAY have its own screensaver. If so, the device's native screensaver MUST be controlled as specified in section 3.1.5.3 based on the value of the Screensaver Flag parameter whenever the device receives HeartBeat message.