Wagner,
Considering what you are trying to do and the time and money it would cost you might be better off buying two new UPS units and going from there.
Just about every UPS out there now is set up for communications with your network, either through an RS 232 port or an SNMP card. The UPS...
First thing you need to do is make sure that your UPS is designed to communicate with a genset. Once the UPS knows that it is on generator there are usually several parameters that you can set. IE the soft start time, frequency following envelope, and battery recharging. The other thing to...