[Nut-upsuser] OL/OB on RD

[ahgu]

I have a unisys UPS, I probed the RS232 and notice that pin 2,  (receive data) is going from -6v (OL) to 12v(OB), but I don't see the setting for the genericups. Seems nobody else is using the RD pin?

Any driver I can use?

Thanks
-Andrew
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