LI-COR LI-7815, Instruction Manual

Page: 73 / 98

Streaming data into the interface
This tutorial subscribes to the
data
topic. Subscribing is described in depth at
mosquitto.org/man/mosquitto_sub-1.html.
1
Launch the terminal or command prompt and open the directory that has the Mosquitto apps.
The default directory is
Program Files\mosquitto
.
2 Enter the following command to subscribe to the topic.
mosquitto_sub -h 172.24.82.41 -t
"licor/niobrara/output/concentration"
l mosquitto_sub
launches the application to subscribe.
l -h
specifies a host (the Trace Gas Analyzer) followed by the instrument IP
address
l
172.24.82.41
is the instrument IP address. You can also enter the host name.
Both are given on the instrument display.
l -t
specifies that you want to subscribe to a topic.
l "licor/niobrara/output/concentration"
is the topic and hierarchy.
3 Type
Ctrl + C
to stop the script.
Section 7. Communication with the MQTT protocol
7-3 Streaming data into the interface