NIM2-MAN-19V01 (1104)
Copyright © 2019 Define Instruments
4
1
CLOUD CONNECTION OPTIONS
WiFi (801.11)
WiFi connection enables LOS transmission of up to 1500ft (450m) using the sup-
plied 3dBi wireless antenna.
(eMTC) LTE CAT-M1
4G cellular interface developed specifically for Internet of Things (IoT) and ma-
chine-to-machine (M2M) communications.
Once you have decided on a Cloud connection option, Define WorkBench (see Section 6) can
then be used to configure your Cloud/server connection settings.
A
Custom
connection can also be used to connect to your own server or that of a third party.
The
Custom
connection is secured using TLS and uses MQTT as the protocol transfer mecha-
nism. It sends JSON packets containing the industry standard SenML (Sensor markup lan-
guage) data.
2
OPERATING MODES
2.1 - WiFi Operating Modes
Station Mode
The most common operating mode for a WiFi enabled Nimbus IoT is the
Station (or Client)
Mode
. This mode is used when the Nimbus IoT is required to connect to an access point of an
existing WiFi network as a client.
Depending on the plugin (see Section 6), it can be set up to work with a DHCP server (default
setting), or to have a fixed (or Static) IP address. The user must enter the SSID and passphrase
of the WiFi network that it is attempting to connect to.
Access Point Mode
Some WorkBench plugins also allow a WiFi enabled Nimbus IoT to be run as an access point
which is totally independent of any other networks. This can be useful if there are no WiFi
networks available, or if they are not accessible for security reasons.
When running in
Access Point Mode
, the Nimbus IoT will function as a DHCP server and can
work with up to 5 Clients. The user can set the SSID, passphrase, and also which WiFi channel
to use.
