KS-6615 / KS-6617 series Technical Manual 5 - 5
that case the programmer has to program the command to close the application
programs (just like “Alt+F4” in Windows), and then at the end of the closing operation,
the application program should issue the above mentioned software switch off
command string to COM1 under the protocol: 9600 bps, parity none, 8 data bits, 1
stop bit.
FORCED POWER OFF
In case of serious system halt due to system resources conflict or any reason,
the system could fail to power off through normal means. The Forced Power Off
method is designed for such occasions. With the external power switch defined as
power ON/OFF switch (default status), push down and hold this Power ON/OFF
Switch. The system will be powered off within 10 seconds in this way. Whenever the
machine receives a software command to change the external power switch to ON only,
the forced power off function requires the user to keep the switch pressed for a longer
period between 10 to 20 seconds to function.
In case the system halt situation is so serious that some hardware/firmware
registrations are already confused, this above mentioned forced power off could
though very unlikely still fail. When such situation happens, please remove the external
power input from the adaptor and disconnect the UPS battery for few minutes to reset
the hardware registers.
One example of the need for this forced power off function could happen when
power switch is triggered within 10 seconds of last switching off. It is a common
practice that once the system power is switched off there should be some waiting time
before next switching back on. If the system power is switched off and on in very short
time chances are the system LED module could indicate power on status while the
system remains off. In such case, please use the forced power off function to cancel the
error and wait for 10 seconds before switching on again.
UPS BATTERY
The optional UPS battery is a maintenance-free lead-acid battery and is
targeted to support basically the data preservation and smooth running of the system
during intermittent power failure. This battery is not designed for prolonged power
support to the system against power shutdown. That means, when the AC power
