Nut upsdev - Sep 2006 - Re: Serial Ports (Was Re: Common Power Management : NUT and HAL (stage 1))

-- 
Eindhoven - The Netherlands
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> Is there any reason we don't just do serial PnP? Do UPSes not generally
support this?

Unfortunately, many cheap ones don't or have implementation flaws (the
Sweex 1000 for instance, which calculates the CRC in the wrong way). In
fact, there are a fair number of UPSes in the list of supported UPSes that
use (relay) contact closure interfacing which by nature is not able to do
serial PnP. For UPSes that do support it (MGE for instance and many APC
models), it might be a nice feature though.

Regards,
Arjen
-- 
Eindhoven - The Netherlands
Key fingerprint - 66 4E 03 2C 9D B5 CB 9B  7A FE 7E C1 EE 88 BC 57