LinkBack URL
About LinkBacks
Reply With QuoteIt varied from brand to brand. There are four pins available for this purpose (DCD, DSR, RTS and RI), and different UPSs use different pins. As for the state, usually ground is power fail, and +3V-+12V is power good.
UPS / Auto shutdown question
No flames about why I want to have software based shutdown please- I have my reasons.
The old UPS systems that used "dumb signaling" used 1 pin on the serial port to determin that AC power had failed, and the ups was on batery. Does annyone know what pin this is, and the state of the pin ( +5 = power good, ground = power fail) something like that.
It varied from brand to brand. There are four pins available for this purpose (DCD, DSR, RTS and RI), and different UPSs use different pins. As for the state, usually ground is power fail, and +3V-+12V is power good.
Custom Linux system on an '89 VW GTI 16V Edition One
Jogdial volume control, Sony joystick, IR remote...
Used to be the fastest Linux on the road, until all these NOS types came along...
Posting Permissions
Bookmarks