Campbell CR310 User Manual

4. On the Settings Editor tab, click the MQTT sub-tab.
a. Enable MQTT.
b. Enter the Broker URL. Enter test.mosquitto.org for this example.
c. Select Persistent for MQTT Connection type.
d. Enter 1883 for the Port Number.
e. Write down the MQTT Base Topic; it is case sensitive. By default it is cs/v1/.
f. Keep all other MQTT settings as their defaults.
5. Click Apply.
Program the data logger
Use MQTTPublishTable() within a DataTable/EndTable declaration to publish stored
data via MQTT. See the CRBasic Editor help for detailed instruction information and program
examples: https://help.campbellsci.com/crbasic/cr300/ .
DataTable(Five_Min,True,-1)
DataInterval(0,5,Min,10)
Average(1,Temp_C,FP2,False)
Minimum(1,BattV,FP2,False,False)
Publish every 5 min in CSJSON format. The last three
parameters are optional to specify longitude, latitude, and
altitude. Here we use NaN as placeholders for these values.
MQTTPublishTable(0,0,5,Min,1,NaN,NaN,NaN)
EndTable
19. Communications protocols123

Campbell CR310 Specifications

General

Brand	Campbell
Model	CR310
Category	Data Loggers
Language	English