TC65 Terminal Hardware Interface Description
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TC65 Terminal_HD_V02.000b
Page 26 of 65
2007-02-19
3.5.1
Switch on TC65 Terminal
There are several ways to turn on the TC65 Terminal:
•
Switch on via ON/OFF push button or via ONOFF signal line on IO interface connector:
The major approach is to switch on the TC65 Terminal by pressing the ON/OFF key. The
ONOFF pin of the IO connector is connected in parallel to the ON/OFF key and makes
possible to control the TC65 Terminal from a remote unit.
•
Switch on via IGT_IN line (power supply connector) or DTR line (serial connector).
The
rising edge of the IGT_IN line or the DTR line voltage generates an ignition signal
(impulse) so that it is possible to switch on the TC65 Terminal from the host or by remote
control.
•
Switch on via recommended power supply unit
: By connecting the TC65 Terminal with
the recommended power supply unit the TC65 Terminal starts to work. See Chapter 7 for
ordering information the power supply unit.
Switch on condition: When the TC65 Terminal is off the ON/OFF push button or the ON/OFF
signal line must be asserted for at least 400 ms and then released.
3.5.2
Reset TC65 Terminal
An easy way to reset the TC65 Terminal is entering the command AT+CFUN=x,1. For
details on AT+CFUN please see [1].
3.5.3
Switch off TC65 Terminal
There are several ways to turn off the TC65 Terminal:
•
Software controlled shutdown by AT^SMSO command:
The AT^SMSO command lets
the TC65 Terminal log off from the network and allows the software to enter into a
secure state and safe data before disconnecting the power supply. The mode is referred
to Power-down mode. In this mode only the RTC stays active.
•
Software controlled shutdown via ON/OFF push button or ONOFF line at IO interface
connector:
The TC65 Terminal will be switched off
by pressing the ON/OFF push button
or by activating the ONOFF signal for >1s. The shutdown behavior is identical to the
behavior when using the AT^SMSO command.
•
Shutdown via EMEROFF line (power supply connector):
The TC65 Terminal will be
switched off by activating the EMERGOFF signal for >1s. All information stored in the
volatile memory will get lost.
•
Automatic shutdown:
This takes effect when the board temperature is out of range or
when undervoltage or overvoltage conditions occur.
3.5.4
Disconnecting Power Supply
Before disconnecting the power supply from the POWER pin make sure the TC65 Terminal
is in a safe condition. A save condition is waiting 1s after the "^SHUTDOWN" result code has
been indicated.