[Nut-upsdev] MGE MIB related bug

[Kiss Gabor (Bitman)]

Dear folks,

According to mge-mib.c (NUT 2.6.2) LB condition
is gained from variable .1.3.6.1.4.1.705.1.5.14.0 (i.e.
upsmgBatteryLowBattery.0).

The test device of me does not set this variable to yes(1)
even if runtime drops below the preconfigured limit.
I complained about this at Schneider Electric.
They replied that low battery status is indicated by
.1.3.6.1.4.1.705.1.5.14.0 (upsmgBatteryLowCondition.0).

My measurements confirm this statement.
At least in case of NMC 66074, firmware version "GF".

Note: variable descriptions in MGE MIB file are quite poor.
I can imagine that some programmers of SE/APC are
also confused by them and some devices use
upsmgBatteryLowBattery while others use upsmgBatteryLowCondition
to signal LB status.

Gabor