DTU4x0 GPRS/NB-IoT Data Loggers
User Guide. r. 2.01 | 2022-05-17
Tel.: +420 234 076 670
14
e-mail: [email protected]
Configuration mode
The device comes with pre-configured settings and does not require additional configuration. If necessary,
you can change settings remotely via the web interface of
to a PC via USB using the
DTU Configuration Tool
software. When setting up data logger via PC, you
need to push
S2
button on the board to switch to the configuration mode.
LED Indication
DTU4x0 data logger has three LED indicators:
•
ST1
–
external power state indicator.
•
ST2
,
ST3
–
server connection status and
data transmission status indicators.
LED indicators modes are presented in table below:
Function
Condition
Description
External power
connection
ST1
is ON
External power supply connected
ST1
is OFF
External power is not connected
Switching the device to con-
figuration/connection mode
by pressing
S2
button
ST2
and
ST3
flash 3 times
at the same time
The device has entered the configuration/
server connection mode
Server connection and data
transfer mode
ST3
flashes 1 time
every 3 seconds
The device has registered
in a GSM or NB-IoT network
ST2
flashes 1 time
every 3 seconds
Initializing the connection to the server
ST2
and
ST3
flash
simultaneously
Connection to the server via TCP (UDP) estab-
lished / data transmission is in progress
ST2
and
ST3
flash
alternately
for 3 seconds
All data was transferred during the session.
The indication is triggered at the end of the con-
nection session if the connection was established
by pressing the
S2
button.
