User`s guide

MASSA PRODUCTS CORPORATION
Product Manual- April 24, 2012 28 M3 Wireless Ultrasonic Level Sensor
APPENDIX H
Troubleshooting Guide
Issue Condition Solution or work around
Missing data, sensor lost
association.
- Gateway power cycle could
lose association.
- Gateway Xbee version less than
version 21A0.
- Poor RF link
- Xbee firmware was updated
- Upgrade sensor firmware to at least version 31 which will detect
unassociated state and attempt to rejoin gateway.
- Upgrade gateway Xbee firmware to version 21A0. Sensor Xbee
29A0.
- Consider the use of a wall router. Otherwise, relocate gateway.
- Sensor antenna not upright
- Poor sensor/gateway placement
- low battery voltage
Sensors do not rejoin
gateway upon awake
when it was previously
joined
Gateway power cycle and Xbee
"Number of remaining children"
register full (NC=0)
Upgrade Massa Python driver 0.53 or greater which will perform a
Xbee network reset upon gateway boot when NC=10. Sensor
firmware must be ver 31.x or greater which will have the sensor
immediate rejoin the gateway upon its next awake cycle.
Cannot upload sensor
firmware
Gateway XBee version 21A7 and
encryption is enabled
Disable encryption (EE=0) in both sensor and gateway's Xbee. If
encryption required (EE=1), then upload gateway Xbee version
21A0.
Sensor appears joined
with RED LED flashing
every 2 seconds (when
awake) but not seen on
XBee network). Case #1
Sensor associated with another
gateway when several gateways
operating in same vicinity (with
sensor PAN ID=0)
Use non-zero PAN ID’s for gateway and sensor.
Sensor appears joined
with RED LED flashing
every 2 seconds (when
awake) but not seen on
XBee network). Case #2
Gateway encryption enabled
with sensor encryption disabled.
Sensor will be allowed to associate with the gateway but will not
be seen or enabled on the XBee network.
Driver not outputting
data or changing sensor
settings
Using dia.yml controls
Check syntax and spacing for sensor settings in the dia.yml. Also
check MAC address is correctly entered.
Sensor does not join
gateway
RED LED is on solid and does
not blink.
Gateway out of range, poor RF signal strength, Gateway XBee
child table full (NC=0), gateway/sensor PAN ID don’t match when
non-zero for sensor, gateway/sensor’s encryption key don’t match,
gateway SC register 0x3fff (set to 0x1ffe).
Sensor has to rejoin
gateway every awake
cycle
RED LED is on solid then blinks
upon awake. This indicates
gateway has dropped sensor
from its XBee network.
Set gateway’s SN/SP registers timing at least 3 times longer than
the sensor’s sleep register. Some applications will require gateway
to intentionally drop sensors, so this will be normal LED operation
as indicated in the “Condition” column.
Sensor blinking
red/green.
No application firmware
Load gateway with M3 firmware (sensor model specific) and
enable sensor firmware upload setting in dia.yml
M3/50 Sensor range
reporting ½ the distance
Outgoing message range that is
reported to server or cloud
Reminder that Status2 bit 0 indicated range resolution. See
Appendix E.