6. Respond Messages
This chapter shows you how to read and understand the different response messages sent from CT-58A.
When CT-58A is in GPRS/SMS mode it will upload the data to the assigned URL first. However, if GPRS
service is not available, it will send the SMS to the predefined phone number instead. In the case of
GPRS-only mode, CT-58A will only send the data by GPRS no matter there is GPRS service or not.
Basically, there’re 3 different situations that trigger the CT-58A to response its position (
Auto Report,
SMS Polling and Emergency
) and are shown in the following pages.
Event Table:
This event table helps you to know what event triggers the response.
Note: When CT-58A experiences the low battery power, it will send an SMS to the 1
st
phone number in
the phonebook. The message will be
“username, Device Power low, Check/recharge”.
It
will send a second SMS when the power is really too low. The message will be
“username,
Device Power too low, recharge battery”.
Event
Descriptions
Auto
When the monitor sends a valid Auto Report command to CT-58A, it will send a
report including an “Auto” behind each GPRMC sentence.
SOS
When the user presses the Panic button, it will send the report including an “SOS”
event behind each GPRMC sentence. No configuration is allowed in SOS mode. The
SOS mode will only be released by special commands (Master Reset and Off Panic)
and switching it off/on.
POLL
When using the SMS to poll the report, the event will be “poll”.
Vibration
When the vibration is triggered, CT-58A will send the report including a “Vibration”
event behind each GPRMC sentence
GFIN
GOUT
When a geo fencing coordinate is defines, and the tracker is moved into or out the
geo circle, CT-58A will send the report including a “GFIN/ GOUT” event behind each
GPRMC sentence
