On 5/28/19 3:39 PM, Julian H. Stacey wrote:> grumpy at mailfence.com wrote: >> a friend gave me an old apc smart-ups 1250 >> it has a rs232 interface but i have no pc with a rs232 port >> i attempted to use a rs232 to usb adapter but the ups goes nuts >> i connected the ups to batteries and verified it was working properly >> when i plug the usb cable into the pc the ups shuts down >> when i attempt to turn it on it beeps twice and shuts down >> this all occurs before i start the nut software >> other than give up or buy a new ups, any suggestions > Far cheaper than a new UPS would be a 2nd hand old small PC with ethernet; > then run NUT over ethernet to modern PChe would still need a correct cable ( as required by APC, I forgot about their brain dead decision to use non standard wiring ), which seems to be his real problem. and cheaper and consuming much less energy than any old pc is a pci rs232 adapter
Hi, Reference:> From: Manuel Wolfshant <wolfy at nobugconsulting.ro> > Date: Tue, 28 May 2019 16:42:21 +0300Manuel Wolfshant wrote:> On 5/28/19 3:39 PM, Julian H. Stacey wrote: > > grumpy at mailfence.com wrote: > >> a friend gave me an old apc smart-ups 1250 > >> it has a rs232 interface but i have no pc with a rs232 port > >> i attempted to use a rs232 to usb adapter but the ups goes nuts > >> i connected the ups to batteries and verified it was working properly > >> when i plug the usb cable into the pc the ups shuts down > >> when i attempt to turn it on it beeps twice and shuts down > >> this all occurs before i start the nut software > >> other than give up or buy a new ups, any suggestions > > Far cheaper than a new UPS would be a 2nd hand old small PC with ethernet; > > then run NUT over ethernet to modern PC > he would still need a correct cable ( as required by APC, I forgot about > their brain dead decision to use non standard wiring ), which seems to > be his real problem. and cheaper and consuming much less energy than any > old pc is a pci rs232 adapterYes, I have an APC too, APC pin out is weird non standard, I soldered up my own special cable adapter years back if he (grumpy at mailfence.com cc'd) just connected some serial adapter to APC, that would Not work, & might be cause of his shutdown, grumpy at mailfence.com should first make up an adapter with a male & female, to adapt from APC to standard, that can then be added to whatever else is used/ tried beyond. Cheers, Julian -- Julian Stacey, Consultant Systems Engineer, BSD Linux Unix, Munich Aachen Kent Brexit ref. stole votes from 700,000 Brits in EU; 1.9 M young, more remainers had no vote; 1.3 M old, mostly leavers now dead. Lies part paid by illegal foreign funds. In-sufficient fines & control. http://stolenvotes.uk
We always use crimp pin connectors for rs232. That makes it easy to do custom pinouts (including "null-modem"). You can still get wires with crimp pins pre-installed also - although using a crimp tool is easy enough. E.g. https://www.amazon.com/Connectors-Pro-Hoods-Pins-50/dp/B07JFD2C1D On Tue, 28 May 2019, Julian H. Stacey wrote:>>>> it has a rs232 interface but i have no pc with a rs232 port >>>> i attempted to use a rs232 to usb adapter but the ups goes nuts > > Yes, I have an APC too, APC pin out is weird non standard, I soldered > up my own special cable adapter years back if he (grumpy at mailfence.com > cc'd) just connected some serial adapter to APC, that would Not > work, & might be cause of his shutdown, > > grumpy at mailfence.com should first make up an adapter with a male & > female, to adapt from APC to standard, that can then be added to > whatever else is used/ tried beyond.-- Stuart D. Gathman <stuart at gathman.org> "Confutatis maledictis, flamis acribus addictis" - background song for a Microsoft sponsored "Where do you want to go from here?" commercial.