CMi4110 User’s Manual English v1.3
CMi4110 User’s Manual English v1.3
page | 9 (27)
[2018-06]
V1.3
5.3.3 Start-up and LED indications
Module activation
Upon delivery, CMi4110 is set to passive mode, which means no messages will be transmitted from the
module. There are two ways to activate the module:
1. Press down the push button (2) for at least 5 seconds until the green LED lights up, then release
the button. A few seconds (1 to 11 seconds) later, CMi4110 will indicate start-up by flashing red
and green LEDs for one second.
2. Via the Elvaco OTC app. Go to
Apply mode
, set the Module power to “active” and click
Apply
settings.
Place the phone on the right side of the meter. The mobile phone should vibrate three
times. This indicates that settings have successfully been applied.
Network join
After activation, CMi4110 will attempt to join the LoRaWAN network. The phase is indicated by short
flashes every 5
th
second on the green LED. When CMi4110 succeeds in joining the LoRaWAN network,
the green LED will lighten up for 8 seconds, as illustrated by Figure 1.
If the module fails to join the LoRaWAN network 6 times, it will wait for 60 minutes before another join
attempt is initiated in order to conserve battery. A new join attempt cycle can be manually started anytime
by pressing down the push button (2) for at least 5 seconds, until the green LED lights up, and then
release the button.
When the module has joined the LoRaWAN network, meter data will initially be transmitted from the
module every minute (regardless of transmit interval settings) in order to set the right data rate. After 10
minutes of calibration, the module will start to deliver meter data using its configured settings.
Figure 1: Network join LED indication
When activation-by-personalization (ABP) is used, the module does not perform a join
operation before sending messages. Therefore, the 8-second indication of connection will
not
appear in ABP mode.
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.
Figure 2: Soft start LED indication
