Q. Could you explain about interface condition, or interface
condition of RS232C signal, for Nonstop power supply?
A． Interface condition of Nonstop power supply other than NSP7 series is as
Refer to this in developing Nonstop power supply monitoring
Following actions are required to interconnect PC with Nonstop power supply.
1）AC input fail detection signal (=Negative) to be sent to PC from
Nonstop power supply when blackout occurs.
2）PC activates the timer to
await recovery of AC input upon receipt of the above 1).
3）If AC input is
recovered during awaiting recovery of AC input, normal operation is resumed.
4）When recovery awaiting time has passed, shutdown of applications and OS is
5）In the case that Nonstop power supply has sent the signal of
DC input fall detection (=Negative) to PC from Nonstop power supply during
recovery awaiting time, the action
of 4) above shall be performed without
6）Send all DC output forcible shutdown (=Positive) signal shall
be sent to Nonstop power supply from PC at the timing when power shutdown of
PC is acceptable.
* In the case that the
signal is unable to be controlled at the timing when power of PC can be shut
down, shutdown shall be performed by APM (Advanced Power Management).