SENSOR-SPECIFIC MESSAGES
18
Wireless Acceleration Sensor User Guide
Chapter 5 – Sensor-Specific Messages
Uplink Messages
The uplink message (sensor to web application) specific to the sensor is defined in following table. The common
uplink messages are not included in this section (see common messages document)..
Byte
Description
0
Movement event
The movement event byte is defined in the following table
Event
Description
0x00
Movement started
0x01
Movement has stopped (see Setting Window)
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).
Byte
Description
3
Disable reporting (see Disable Reporting table below)
2
Scaling (See Scaling table below)
1
Settling window time (see section Settling Window)
0
Acceleration change threshold for any axis (X, Y, or Z).
Bits 6:0 only
The table below describes the bit definitions for the Disable Reporting byte from the downlink command. In each
case setting the bit will disable the reporting and clearing the bit will enable reporting.
Bit
Description
7:2
Not used
1
Disable reporting for movement stop
0
Disable reporting for movement start
The table below defines the scaling parameter in the downlink command.
Setting
Description
Units for Threshold
0x00
+/-2g
0.016g
0x01
+/-4g
0.032g
0x02
+/-8g
0.062g
0x03
+/-16g
0.186
