Operation; Switching On The Modem. New "Automatic Restart After Shutdown" Feature; Switching Off The Modem - MTX -3G-JAVA series User Manual

5. Operation

5.1 Switching on the modem. New "Automatic restart after shutdown" feature
There is no special way to turn the modem on: just apply power to the VIN terminal via a power
connector (see Section 4.1). The modem will be fully operational after 4 to 9 seconds. Logging onto a
network may take longer than this and is out of the modem's control.
The Automatic Restart after Shutdown feature is enabled as part of the default factory settings. This
means that if/when the modem has to be switched off, due to a critical power supply, the modem
will restart itself within a few seconds. This feature allows an application to be switched on all the
time and also allows it to restart itself.
The Automatic Restart after Shutdown feature cannot be disabled in the base MTX‐3G‐JAVA and ULP
models. In RS485 models there is an AUTO_ON terminal in the Power Connector (see
which allows for the enabling or disabling of this function. In all other models this feature can be
disabled by software using GPIO3 and then you can switch on the modem with the TURN_ON pin at
the power connector.
5.2 Switching off the modem
There are several ways to switch off (power down) the modem:

Using the TURN_OFF pin (see
pressing the TURN_OFF pin (for at least 1 second) causes the modem to enter power down
mode. Its use is not recommended except in an emergency. A delay of up to 10 seconds is
experienced until the modem logs out of the network. The RTC stays active.

AT^SMSO command: this allows the modem to log out of from the network and allows the
software to enter into a secure state and save data before disconnecting the power supply. A
delay of up to 10 seconds is experienced until the modem logs out of the network. The RTC
stays active.

In ULP models, the only way to switch off the modem and enter into the Ultra Low Power
mode is to clean the input latches and execute the AT^SMSO command.
www.mtx‐terminals.com
section 4.1 to see the terminals that use it). Continuously
www.mtxm2m.com
MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX‐3G‐JAVA Family
2015/10 v1.6
Section 4.1)
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