What is the procedure for sending downlink messages to sensors?

            The recommended way to send a downlink is to use the RadioBridge Console API which uses a simple POST request. 
            From there you can use the uplink and downlink APIs described in the RadioBridge API Documentation

            To access the API section of the Console, log in and select the API tab along the left side or use the direct link provided here.

            You can also send downlinks directly via machineQ. Refer to machineQ's API documentation to create a downlink.

            Contact Sensor Downlink Example:

            Downlink message formats for RadioBridge sensors are documented in the user guides for each product.
            If you were looking for configuration information for the Contact Sensor, you would refer to section 6.3 of the Contact Sensor User Guide.

            An entire downlink message should always be 8 bytes long (zero padded at the end).
            The first byte is always the device identifier. In this example 0x07 would define the type of downlink for a contact sensor.
            The second byte defines which types of events are disabled.
            The next two pairs of bytes define how long an event must be held before sending an event message.

            The Contact Sensor Downlink can be diagrammed as follows:

                  07            Device Identifier (07 = Contact Sensor)
                  03            Disable Events Config (00 = none disabled, 01 = closed events, 02 = open events, 03 = both)
                  FFFF        Closed Hold Time before message sent - can be 0 (disabled) to 65535 x 250ms (i.e. 0004 = 1 sec, FFFF = max 4.5 hours)
                  FFFF        Open Hold Time before message sent - can be 0 (disabled) to 65535 x 250ms (i.e. 0004 = 1 sec, FFFF = max 4.5 hours)
                  0000       Zero padding to make a total of eight bytes for the entire downlink message.

            Examples:

                  0700 0004 003C 0000
                  contact sensor
                  no events disabled
                  contact must be closed for 1 second to trigger an event
                  contact must be open for 15 seconds to trigger an event

                  0702 0E10 0000 0000
                  contact sensor
                  open events disabled
                  contact must be closed for 15 minutes to trigger an event

            See Also:
            Updated: 13 Dec 2018 07:25 AM
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