MEN G25A, Руководство пользователя

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Functional Description
20G025A00 E3

2017-04-20 Page 33
3.3 Supervision and Management
The G25A provides an intelligent board management controller (BMC) with the following
main features:

System watchdog

Operating hours counter

Power cycle counter

Voltage supervision

Error state logging

Temperature measurement
3.3.1 Watchdog
The watchdog device monitors the CPU board on operating system level. If enabled, the
watchdog must be triggered by application software. If the trigger is overdue, the
watchdog initiates a board reset and in this way can put the system back into operation
when the software hangs.
The watchdog unit can be enabled or disabled, as required and the watchdog timeout
can be set in 100-ms steps from 100 ms up to 1:49:10 (hh:mm:ss) - 65536 steps.
3.3.2 Temperature Measurement
The G25A uses a temperature device to measure the local CPU board temperature. The
temperature device is connected to the BMC via I2C, and is supported by the firmware.