It is possible to communicate with low cost Cyberpower UPS’s (uninterruptible power supply) but not by their built in serial port. Introducing the Jmayes Engineering serial port adapter board that fits any CyberPower UPS that supports the Network Board option RMCARD202 or RMCARD205. Simply plug in this board into the network board option slot and full serial communication is available using plain english commands @ 2400-n-8-1.
This board contains a MAX232 Buffer for applications that have long runs.
|Command to UPS (Add CR,x0D)||Result|
|S(0x2E)1||turn off now|
|TL||Deep battery test|
|CT||Cancel deep battery test|
|S03R0003||Reboot in 3 (minutes)|
|S03||Shutdown in 3 minutes|
|C||Cancel reboot or shutdown|
|D||# I116.0 O116.0 L000 B100 F060.0 R100 S€%À€€ (Spaces added for readability)|
Much more info is available, see my blog post @ jmayes dot com