CMi4160
– LoRaWAN
®
Module
6
02/2021
5.3.4
NETWORK PREPARATION
For the module to connect to the LoRaWAN
®
network, it needs to be added in the network server.
More specifically, the following device information needs to be registered: Device EUI, Application key
and Join EUI. (If using ABP mode, the following information should be registered instead: Application
Session key, Network Session key and Device address.)
Diehl Metering strongly recommends using Over-the-air activation (OTAA) to
facilitate deployment and minimize the risk of duplicated keys.
5.3.5
ACTIVATION
Module activation
Upon delivery, CMi4160 is set to passive mode, which means no messages will be transmitted from
the module. The module can be activated in one of the following ways:
a)
By using the module push button: Press down the push button of the module for at least five
seconds until the green LED lights up.
b)
By using the Elvaco OTC App: Open the Elvaco OTC app (downloadable via Google Play) and
scan the module (make sure NFC is activated on the phone). Remove the front enclosure of the
meter if needed. Go to Apply mode, set the Power mode to “active” and click Apply settings. Place
the phone next to the module. New settings are applied via NFC. You can make sure that the
module has joined the
LoRaWAN
®
network correctly by checking the “network join” field in the
Inspect tab of the OTC App.
Network join
When activated, CMi4160 will attempt to join the LoRaWAN
®
network. The phase is indicated by short
flash on red light, then green and red LED lights up for 1 second, followed by short flashes on the
green LED until the module has joined the LoRaWAN
®
network. When CMi4160 succeeds in joining
the LoRaWAN
®
network, the green LED will light up for 8 seconds, as illustrated by Figure
Figure 1: Network join LED indication
If the module fails to join the LoRaWAN
®
network, it will perform retries until it succeeds. The time
between each attempt will increase for every attempt until it is performed once every day. A new join
attempt cycle can be manually started anytime by using the push button to reboot the module or by
deactivating and activating the module using the Elvaco OTC App.
When the module has joined the
LoRaWAN
®
network, it will perform three quick transmissions
(regardless of transmit interval settings) before starting to use its configured transmit interval settings.
By using the Elvaco OTC App, you can easily verify that the module is successfully communicating with
the meter (“Meter communication”) and is connected to the
LoRaWAN
®
network (“Network joined”).
Soft start
In rare cases, if the battery is weak, the module will perform a soft start to be able to start-up despite
the condition of the battery. The soft start takes 10 minutes to complete. The red LED will blink shortly
every 10
th
second until the start-up has completed.
