
Cinterion
®
Java Terminals Hardware Interface Overview
3.9 Power Up/Power Down Scenarios
39
EHSxT_BGS5T_HIO_v03
2016-05-26
Confidential / Released
Page 34 of 50
Mains adapter: If it fits into the design of your application we recommend the plug-in supply unit
used with the type approved Gemalto M2M reference setup. Ordering information can be found
in Chapter 6. This 12V mains adapter comes with a 6-pole Western plug and provides an inter-
nal connection between IGT_IN pin and PLUS pin. If there is such an “auto ignition” connection
between PLUS and IGT_IN, the module will restart automatically after a normal shutdown. Note
that if employing PoE for EHS6T LAN, the module will also restart automatically after a normal
shutdown.
3.9
Power Up/Power Down Scenarios
In general, be sure not to turn on the Java Terminals while it is beyond the safety limits of volt-
age and temperature. Java Terminals immediately switch off after having started and detected
these inappropriate conditions. In extreme cases this can cause permanent damage to the
Java Terminals.
3.9.1
Turn Java Terminals on
There are various possibilities to turn on Java Terminals and start into normal mode, depending
on connecting and/or operating states.
If powered off (i.e., if Java Terminals‘ power supply is disconnected):
•
Java Terminals can simply be started up by plugging an appropriate power supply unit
between PLUS and GND of the 6-pole Western jack. If using the PoE feature, EHS6T LAN
can also be started up by connecting simply the Ethernet interface
If switched off (i.e., while in Power Down mode):
•
Java Terminals can be started up by activating the IGT_IN signal (pin 4).
•
Java Terminals can be started up by activating the RS-232 DTR line (as long as RST_IN
signal (pin 3) is not active (voltage <2V)
•
Java Terminals can be started up by configuring the watchdog appropriately.
Note: With an “auto-ignition“ connection between IGT_IN and PLUS, or if employing PoE (see
), Java Terminals will automatically restart into normal mode after switch off (see
). The start up variant from Power Down mode is therefore only applicable if there
is no such “auto-ignition“ connection at the power supply unit.
3.9.2
Reset/Restart Java Terminals
There are various possibilities to reset/restart Java Terminals:
•
Java Terminals can be reset/restarted by entering the command AT+CFUN=x,1. For details
on AT+CFUN please see
.
•
Java Terminals can be reset/restarted by configuring the watchdog appropriately.
•
Java Terminals can be reset/restarted by configuring a wake-up alarm (see
)
before using AT^SMSO to turn them off and send them into Power Down mode.
•
Java Terminals can be reset/restarted by simply shutting them down as described in
and then restarting them as described in
. Note: With an “auto igni-
tion“ connection between IGT_IN and PLUS, or if employing PoE (see
), it is
ensured that the module will automatically restart after a normal shutdown using
AT^SMSO.