R
ADIO
B
RIDGE
RBM101
I
U
SER
G
UIDE
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OPYRIGHT
©
2017,
R
ADIO
B
RIDGE
I
NC
.
R
ADIO
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RIDGE
RBM101
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AGE
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4.
M
ESSAGES
4.1.
Sensor Event Messages
This section defines the sensor event messages that are sent from the module back to the
host over the serial port. The SEN message contains both Device Type and Sensor Status fields.
Each Device Type listed below has a corresponding table that defines the Sensor Status bits.
Note that these tables have been established for third-party manufacturers and thus are not
complete in terms of all combinations of sensor codes. However, the primary functions of a
sensor such as open/close, tamper on/off, etc. are provided here to give the user basic
functionality. It is highly recommended to test all boundary conditions for each sensor to be
used in an end application and verify the tables for that use case.
In the tables below, an “x” denotes a “don’t care” condit
ion for the associated bits. See the
RBM101i-319 product page on the Radio Bridge website for updated tables.
Table 10 Status Bits Description
Status Bits
Description
xx11xxxxxxxx
Sensor opened
xx10xxxxxxxx
Sensor is still open after it has been previously reported. Usually
these bits are set when another event occurs and device is still in
open state.
xx00xxxxxxxx
Sensor closed
xxxxxx11xxxx
Tamper event true
xxxxxx10xxxx
Tamer is still true after it has been previously reported. Usually
these bits are set when another event occurs and device is still in
tamper state.
xxxxxx00xxxx
Tamper event false
