HL78xx Modems Network Settings iMetos User Menu

Terminal Mode Connection
Put in J1 and reset the station by pressing the reset button or removing the power source and
plugging it back in again. Connect the USB cable to the computer and note the COM port that will
be enumerated in Device Manager. Open a serial terminal like teraterm or the Pessl Terminal
application and set the COM port noted above.
The settings are, baudrate: 115200, data bits: 8, parity: None, stop bits:1
On the terminal and you will be on main menu as shown below
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USER: \ MAIN MENU
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(1) SYSTEM
(2) SENSORS
(3) MODEM
(4) FLASH
>> Select...

Press 3 to go to the Modem menu as shown below
>> Chosen function: MODEM
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USER: \ MAIN MENU \ MODEM
================================================================================
(1) MODEM SETTINGS
(3) SEND STATION DATA
(4) GET GPS
(5) GET CONF SMS
(6) Download FW
(7) Download APN list
(ESC) BACK
Press on 1 to go to the modem settings menu as show below
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS
================================================================================
(1) GET MODEM INFO
(2) SEND IDENTIFICATION SMS
(3) UNLOCK SIM CARD (PIN CODE)
(4) SIGNAL QUALITY GRAPH
(5) APN OF CUSTOMER
(8) SET PREFERRED NETWORK TYPE
(9) SET NETWORK SCAN METHOD
(A) Check available APNs
(B) DISABLE NETWORK SETTINGS
(D) DISABLE APN USE
(E) ENABLE APN USE
(ESC) BACK

Press 8 to set a preferred network
>> Chosen function: SET PREFERRED NETWORK TYPE

-- Loaded network settings in global RAM object --
-----------------------------------
Network settings enabled: 1 True
Preferred network: 2 CAT-M1
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS \ SET PREFERRED NETWORK TYPE
================================================================================
(1) NB-IoT
(2) CAT-M1
(3) GSM/2G
(ESC) BACK

Press 3 to select GSM/GPRS/2G network and then Enter key to save that selection in non-volatile
memory. If you want to cancel and select a different network, press Escape key. This action times
out in 2 seconds. If you do not press either Enter or Escape key, the operation is automatically
cancelled upon timeout.
>> Chosen function: GSM/2G
You have 2 options:
--------------------------------------------------------------------------------
(Enter) <- confirm GSM/2G preferred Network selection
(Esc) <- cancel & exit from this menu item (without saving)
--------------------------------------------------------------------------------

-- New preferred network setting saved --
-- Loaded network settings in global RAM object --
-----------------------------------
Network settings enabled: 1 True
Preferred network: 3 GSM/2G
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS \ SET PREFERRED NETWORK TYPE
================================================================================
(1) NB-IoT
(2) CAT-M1
(3) GSM/2G
(ESC) BACK

Press Escape key to go back to the Modem Settings menu. Then press 9 to select Network Scan
Method
>> MOVE TO PREVIOUS MENU
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS
================================================================================
(1) GET MODEM INFO
(2) SEND IDENTIFICATION SMS
(3) UNLOCK SIM CARD (PIN CODE)
(4) SIGNAL QUALITY GRAPH
(5) APN OF CUSTOMER
(8) SET PREFERRED NETWORK TYPE
(9) SET NETWORK SCAN METHOD
(A) Check available APNs
(B) DISABLE NETWORK SETTINGS
(D) DISABLE APN USE
(E) ENABLE APN USE
(ESC) BACK
>> Chosen function: SET NETWORK SCAN METHOD
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS \ SET NETWORK SCAN METHOD
================================================================================
(0) Modem Auto
(1) System Auto
(2) Fixed
(ESC) BACK
Press 2 to select the Fixed network scanning method and quickly press Enter to save. You can press
Escape instead to cancel. There is a 2 seconds timeout which automatically cancels the operation.
>> Chosen function: Fixed
You have 2 options:
--------------------------------------------------------------------------------
(Enter) <- confirm Network scan mode set to Fixed
(Esc) <- cancel & exit from this menu item (without saving)
--------------------------------------------------------------------------------

-- New network scan method setting saved --
-- Loaded network settings from global RAM object --
-------------------------------------
Network settings enabled: 1 True
Network scan method: 2 Fixed
================================================================================
USER: \ MAIN MENU \ MODEM \ MODEM SETTINGS \ SET NETWORK SCAN METHOD
================================================================================
(0) Modem Auto
(1) System Auto
(2) Fixed
(ESC) BACK

Press Escape to go back to the Modem Settings menu and Escape again to go to the Modem main
menu. From here, press 3 to upload data to the server. This steps is necessary to connect to the
selected preferred network using the selected method. If you are taken back to the Main menu
because the modem is still searching for network, press 3 to go to Modem main menu and then 3
again to send data to the server.
================================================================================
USER: \ MAIN MENU \ MODEM
================================================================================
Modem process still not in Idle state
Returning to previous menu
To see the progress of the modem, remove the jumper from J1.
================================================================================
USER: \ MAIN MENU
================================================================================
(1) SYSTEM
(2) SENSORS
(3) MODEM
>> Chosen function: MODEM
================================================================================
USER: \ MAIN MENU \ MODEM
================================================================================
(1) MODEM SETTINGS
(3) SEND STATION DATA
(4) GET GPS
(5) GET CONF SMS
(6) Download FW
(7) Download APN list
(ESC) BACK
>> Chosen function: SEND STATION DATA
================================================================================
USER: \ MAIN MENU \ MODEM \ SEND STATION DATA
================================================================================
> Starting modem process
---- INFO: Success. ----
>> Success
>
>
>> Turning modem off
>
AT+KSREP=1
OK
AT+CPWROFF
+SIM: 0
+KSUP: 0
=======================================================================
USER: \ MAIN MENU \ MODEM
=======================================================================

About the Network Scanning Methods
The Fixed method only scans for the previously selected Preferred Network without trying any
other kind.
The System Auto method scans for the previously selected Preferred Network and only after it fails
to connect tries the other two types of networks. If you selected GSM preferred and the system
cannot connect to a GSM network, after the timeout the system will scan for CAT-M networks and
then NB-IoT if that fails too.
The Modem Auto method adds a preferred network list to the modem beginning with the
previously selected Preferred Network and then the other two. It lets the modem automatically
handle network registration. This method is like a shot in the dark and heavily depends on the
modem firmware version and the networks available in the area. We do not have much confidence
in this method but it would work in the best case scenario where all three kinds of networks are
available (GSM, CAT-M and NB-IoT)
Disabling and Enabling APN
On some networks it is not necessary to use an APN to upload data to the server. You can try
disabling APN in the modem settings and if it works, the process runs much faster. If it does not
work, you can re-enable the use of APN and the configured APN will be used.