root@sonic:/home/admin# cat /var/log/syslog | grep fan
Jun 23 05:51:03.742334 sonic INFO pmon.sh[1573]: 2017-06-23 05:51:03,741 INFO spawned: 'fancontrol' with pid 19
Jun 23 05:51:03.0 sonic INFO supervisord: fancontrol Loading configuration from /etc/fancontrol ...
Jun 23 05:51:03.0 sonic INFO supervisord: fancontrol 
Jun 23 05:51:03.0 sonic INFO supervisord: fancontrol Common settings:
Jun 23 05:51:03.0 sonic INFO supervisord: fancontrol   INTERVAL=10
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol 
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol Settings for /sys/bus/i2c/devices/2-0066/fan_pwm:
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   Depends on /sys/bus/i2c/devices/3-004b/hwmon/hwmon[[:print:]]*/temp1_input
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   Controls /sys/bus/i2c/devices/2-0066/fan1_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan2_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan3_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan4_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan5_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan6_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINTEMP=20
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MAXTEMP=60
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINSTART=150
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINSTOP=7
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINPWM=0
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MAXPWM=255
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol 
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol Settings for /sys/bus/i2c/devices/2-0066/fan_pwm:
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   Depends on /sys/bus/i2c/devices/3-004a/hwmon/hwmon[[:print:]]*/temp1_input
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   Controls /sys/bus/i2c/devices/2-0066/fan1_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan2_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan3_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan4_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan5_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol /sys/bus/i2c/devices/2-0066/fan6_front_speed_rpm
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINTEMP=20
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MAXTEMP=60
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINSTART=150
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINSTOP=7
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MINPWM=0
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol   MAXPWM=255
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol Enabling PWM on fans...
Jun 23 05:51:04.0 sonic INFO supervisord: fancontrol Starting automatic fan control...
Jun 23 05:51:05.642549 sonic INFO pmon.sh[1573]: 2017-06-23 05:51:05,340 INFO success: fancontrol entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
Jun 23 05:51:05.0 sonic INFO supervisord: start.sh fancontrol: started
Jun 23 05:51:12.0 sonic INFO supervisord 2017-06-23 05:51:03,741 INFO spawned: 'fancontrol' with pid 19
Jun 23 05:51:12.0 sonic INFO supervisord 2017-06-23 05:51:05,340 INFO success: fancontrol entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

root@sonic:/home/admin# accton_as7512_util.py show
============================================
FAN: 
============================================
   fan1: present=1  front_speed_rpm=6300  rear_speed_rpm=5400 
----------------------------------------------------------------
   fan2: present=1  front_speed_rpm=6200  rear_speed_rpm=5400 
----------------------------------------------------------------
   fan3: present=1  front_speed_rpm=6200  rear_speed_rpm=5400 
----------------------------------------------------------------
   fan4: present=1  front_speed_rpm=6500  rear_speed_rpm=5500 
----------------------------------------------------------------
   fan5: present=1  front_speed_rpm=6300  rear_speed_rpm=5300 
----------------------------------------------------------------
   fan6: present=1  front_speed_rpm=6500  rear_speed_rpm=5500 
----------------------------------------------------------------