01 err_code: procession error code.
OK – Succeed.
UNSUPPORT – Command not supported.
FAILED – Procession failed.
B17,<err_code>
01 err_code: procession error code.
OK – Succeed.
UNSUPPORT – Command not supported.
FAILED – Procession failed.
B19,<index>,<flag>,<radius>,<lat>,<lon>
01 index: fence index, value 1~4, i.e.: 4 geo-fence can be set at most.
02 flag: alarm flag
flag=1: Trigger alarm when exit fence.
flag=2: Trigger alarm when enter fence.
flag=3: Trigger alarm both enter and exit fence.
03 radius: radius of circle geo-fence, unit meter.
04 lat: latitude of center point, decimal string format.
05 lon: longitude of center point, decimal string format.
06 When flag, radius, lat, lon are empty, delete goe-fence specified by index; When
index=0 or empty, delete all.