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LTRASONIC
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EVEL
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OPYRIGHT
©
2019,
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ADIO
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The current distance field in the ultrasonic level event uplink message is the current distance
measurement in millimeters with a range of 0-9999 (0-10 meters). The distance is
automatically calibrated by the device.
7.3.
Downlink Messages
The downlink message (web application to sensor) specific to the sensor configuration is
defined in following table. The common downlink messages are not included in this section
(see common messages document).
Table 7 Downlink Configuration Message 0x10
Byte Description
0
Mode: 0x00 for Threshold, or 0x01 for Report on Change
1-6
Defined by Mode (See Mode sections)
The mode byte selects one of two modes: threshold-based alerts or report-on-change alerts.
The remainder of the payload (bytes 1-6) are determined by the mode selected and defined
in the next two sections.
7.3.1.
Threshold Mode
Threshold mode is set when byte 0 of the payload is set to 0x00. The remainder of the
payload is defined in the following table.
Byte Description
0
0x00 (Threshold mode)
1
Periodic reporting in 1 minute or 1 hour intervals. Default is 0 (disabled)
2
Hold time in 1 second or 1 minute intervals
3
Lower distance threshold in mm, upper byte. Default 100mm
4
Lower distance threshold in mm, lower byte
