Campbell AL205E, Руководство по эксплуатации продукта, Страница: 18 / 36

Example 2: Return GPS time, in seconds, since 2010
This example uses ALERT2 IND API to get the AL205E GPS current time, in seconds, since 2010.
Table 4-3 (p. 16) provides the display parameters and Table 4-4 (p. 16) provides the AL205E
response.
Table 4-3: Display parameter – return GPS time, since 2010, valid flag
Prefix Length
API command
(type)
Length Value
ASCII/
Decimal
ALERT2 3
Display
parameter
(124)
1
Return GPS time
valid flag (127)
Encoded
Hex
41 4C 45 52 54 32 03 7C 01 7E
Table 4-4: Display parameter – return GPS time, since 2010, valid flag
Prefix Length
API command
(type)
Length Value
ASCII/
Decimal
ALERT2 3
Return GPS time,
in seconds,
since 2010 (126)
4
03 (GPS clock,
not synced)
Encoded
Hex
41 4C 45 52 54 32 03 7E 04
13 AA CE 18
1
1 13 AA CE 18
in HEX is 329960983 seconds since 2010. The date the GPS is reporting is 06/15/2020 23:49:44.
Example 3, Sending ALERT2 self-reporting data
This example sends an ALERT2 message using a general sensor report (GSR) for three sensors.
Table 4-5 (p. 17) provides the message components. The reported values, when decoded, are
Sensor ID 9 with a value of 0, Sensor ID 20 with a value of 13.780, and Sensor ID 12 with a value of
86.431. Data commands are not acknowledged and reported as successful or not.
AL205E ALERT2 Encoder 16