SOLUTION: apcupsd to Minisys (ProtectLI) and APC Smart Serial Interface
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These are the things to do to configure apcupsd to a legacy APC UPS using a 940-0024C Smart Serial Cable,
to a MiniSys (ProtectLi) computer with a RJ45 COM port.
1. Must install pFsense VGA, single COM port will be dedicated to UPS.
2. Minisys BIOS = Disable COM redirection. In Addition I set mine for 2400,n,8,1 or whatever speed ur UPS is currently set.
3. Install apcupsd pkg and configure with params below.
4. Build and use cable as shown below.
/usr/local/etc/apcupsd/apcupsd.conf
This Doc created 3/14/2018. pFsense 2.4.2. FreeBSD 11.1.
Name your UPS
UPSNAME YOUR_UPS_NAME
Legacy APC serial port
UPSCABLE 940-0024C
Smart Signalling
UPSTYPE apcsmart
DEVICE /dev/cuau0Leave the rest of params at default or customize to suit your need.
Now you must build and use this custom cable, pinout as follows:
Short pins 1 - 8.
# RJ45 DB9-M
+– 1
|
+-- 8
# 3 ----- 1
# 6 ----- 2
# 5 ----- 9
Here's one: https://www.monoprice.com/product?p_id=1151
#END
UPDATE: Even Simpler. Use an USB-Serial dongle like the popular Prolific PL2303 which FreeBSD 11 has built-in driver, coupled with 094-0024c will do it. Then u save the 1 com port for console use. Mine came up as port cuaU0 (uppercase U) when hooked up to the USB3. So config DEVICE /dev/cuaU0.