b. Check MQTT protocol’s connectivity parameters and the publishing options (§). If they are
correct, contact MQTT service’s provider.
6. If the problem is not solved immediately, please remember that the files with the processed data can
be downloaded on a USB pen drive connected to the data logger (§5.1.4.5.3).
❖ Alpha-Log won’t send e-mails in case of alarm
1. Ensure Alpha-Log is configured to connect to the Internet. See the configured network interfaces
(§4.1.3).
2. Ensure the SMTP server settings are correct (§4.1.3, SMTP) and that the specified account may be
used for that purpose. For security reasons, some e-mail services, such as Google Mail, do not allow
its use until you have activated the two-step verification and created the password for the app (the
data logger), directly from your account.
3. Check the parameters entered in the logic associated with the e-mail transmission (§4.1.9). The
conditions of activation of the e-mail transmission may not occur.
4. Ensure the entered mails are correct and active (§4.1.9).
❖ Alpha-Log won’t send SMS in case of alarm
1. Ensure the PPP interface settings are those required by the telephone operator of the SIM in use
(§4.1.3, PPP).
2. Check the parameters entered in the logic associated with the SMS transmission (§4.1.9). The
conditions of activation of the SMS transmission may not occur.
3. Ensure the entered recipient’s telephone number is correct and active (§4.1.9).
4. Ensure the SIM is active, enabled for message transmission and has enough credit.
5. Check the modem connection to Alpha-Log, as well as its power supply.
❖ Alpha-Log won’t send MQTT messages in case of alarm
1. Ensure Alpha-Log is configured to connect to the Internet. See the configured network interfaces
(§4.1.3).
2. Ensure the MQTT server settings are correct and the Publish alarms parameter is activated (§4.1.3,
MQTT).
3. Check the parameters entered in the logic associated with the MQTT messages transmission (§4.1.9).
The conditions of activation of the MQTT messages transmission may not occur.
❖ Missing data in the data files
A lack of data generally depends on a power issue. Alpha-Log’s status screenshot provides information
about the last reset, the operating mode and the power supply voltage (§5.1.4.2, Status). If data logger is
in the “Run limited” status (Low power mode), it will not send data (§4.1.2).
1. If Alpha-Log is powered by a power supply and does not have a battery:
a. Check the wires that connect Alpha-Log to the power supply. One of these might be loose.
b. Check the continuity of the electrical system that the equipment is connected to. In case of
occasional lack of power, it’s suggested the use of a backup battery.
2. If Alpha-Log is powered by a power supply and has a battery:
a. Perform the previous point inspections.
b. Check the battery status. If it’s damaged, replace it. If it’s low, charge it.
3. If Alpha-Log is powered by battery and photovoltaic panel:
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