Campbell Scientific Wireless Sensor Network (CWB100, CWS220, and CWS900) - Manual (Page 52)

Wireless Sensor Network
44
Symptom Possible Cause Solution
First element in
destination array
specified in CWB100
instruction is -3 and all
other elements in the
array are zeroes. The measurement
names in the datalogger
do not match the names
stored in the CWB100
base station. This is a rare error
message that should
disappear after the
datalogger has made its
second attempt to
communicate with the
CWB100 base station.
On the second attempt,
the datalogger will send
the CWB100 base its
version of the names
and then the name
signatures from both
devices will match.
Values in CWB100
destination array are
NAN.
This indicates that the
CWB100 base is unable
to get data from wireless
sensor CWB100 base station is
polling sensor too
quickly.
Sensor not powered.
Sensor not within radio
range of CWB100 base
station.
Another radio is
interfering with wireless
sensor transmissions. Minimum poll rate is 15
seconds per sensor per
hop. Verify that the
scan rate in the
datalogger program for
the scan that includes
the CWB100 instruction
is longer than the
minimum poll rate.
Press Setup button on
back of sensor to check
battery voltage.
Replace batteries if
needed.
Move sensor closer to
CWB100 radio or add
another wireless sensor
in between to serve as a
router.
Try to identify and limit
transmissions from
other radio
Incorrect radio
address/extra characters
returned by
CWB100Routes
instruction The CWSRoutes
variable is not declared
large enough Increase the size of the
string variable
referenced by the
CWSRoutes parameter
Variable Out of bounds
error reported in Station
Status after a sensor is
discovered and no
values are returned for
that sensor The sensor name does
not match the name
parameter specified in
the ArrayIndex
Instruction Change the program or
reconfigure the sensor
so that the names match