IEI Integration ECW-281B-N270-WT v3.01 - Manual (Page 90)

ECW-281B/281B2-R30/N270 Embedded System
Page 75
Minimum Value: 0°C
Maximum Value: 127°C
CPU Temperature Limit of On [020]
WARNING:
Setting this value too high may cause the fan to start only when the
CPU is at a high temperature and therefore cause the system to be
damaged.
The CPU Temperature Limit of On option can only be set if the CPU FAN Mode Setting
option is set to Automatic Mode. Use the CPU Temperature Limit of On option to select
the CPU temperature at which the cooling fan should automatically turn on. When the fan
starts, it rotates using the starting pulse width modulation (PWM) specified in the CPU Fan
Start PWM option below. To select a value, select the CPU Temperature Limit of On
option and enter a decimal number between 000 and 127. The temperature range is
specified below.
Minimum Value: 0°C
Maximum Value: 127°C
CPU Fan Start PWM [070]
The CPU Fan Start PWM option can only be set if the CPU FAN Mode Setting option is
set to Automatic Mode. Use the CPU Fan Start PWM option to select the PWM mode the
fan starts to rotate with after the temperature specified in the CPU Temperature Limit of
On is exceeded. The Super I/O chipset supports 128 PWM modes. To select a value,
select the CPU Fan Start PWM option and enter a decimal number between 000 and 127.
The temperature range is specified below.
PWM Minimum Mode: 0
PWM Maximum Mode: 127
Slope PWM [0.5 PWM]